787433161 has 4 divisors (see below), whose sum is σ = 787489300. Its totient is φ = 787377024.

The previous prime is 787433069. The next prime is 787433173. The reversal of 787433161 is 161334787.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 161334787 = 461 ⋅349967.

It can be written as a sum of positive squares in 2 ways, for example, as 134119561 + 653313600 = 11581^2 + 25560^2 .

It is a cyclic number.

It is not a de Polignac number, because 787433161 - 2⁹ = 787432649 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (787433191) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13045 + ... + 41773.

It is an arithmetic number, because the mean of its divisors is an integer number (196872325).

Almost surely, 2^787433161 is an apocalyptic number.

It is an amenable number.

787433161 is a deficient number, since it is larger than the sum of its proper divisors (56139).

787433161 is a wasteful number, since it uses less digits than its factorization.

787433161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56138.

The product of its digits is 84672, while the sum is 40.

The square root of 787433161 is about 28061.2394772576. The cubic root of 787433161 is about 923.4312483609.

The spelling of 787433161 in words is "seven hundred eighty-seven million, four hundred thirty-three thousand, one hundred sixty-one".