157902818593 has 4 divisors (see below), whose sum is σ = 170049189268. Its totient is φ = 145756447920.

The previous prime is 157902818569. The next prime is 157902818651. The reversal of 157902818593 is 395818209751.

It is a happy number.

157902818593 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 15527153664 + 142375664929 = 124608^2 + 377327^2 .

It is a cyclic number.

It is not a de Polignac number, because 157902818593 - 2⁵ = 157902818561 is a prime.

It is a super-2 number, since 2×157902818593² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (157902818503) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6073185318 + ... + 6073185343.

It is an arithmetic number, because the mean of its divisors is an integer number (42512297317).

Almost surely, 2^157902818593 is an apocalyptic number.

157902818593 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

157902818593 is a deficient number, since it is larger than the sum of its proper divisors (12146370675).

157902818593 is a wasteful number, since it uses less digits than its factorization.

157902818593 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12146370674.

The product of its (nonzero) digits is 5443200, while the sum is 58.

The spelling of 157902818593 in words is "one hundred fifty-seven billion, nine hundred two million, eight hundred eighteen thousand, five hundred ninety-three".