157188431749 has 16 divisors (see below), whose sum is σ = 162454634496. Its totient is φ = 151992892800.

The previous prime is 157188431731. The next prime is 157188431759. The reversal of 157188431749 is 947134881751.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 157188431749 - 2¹⁷ = 157188300677 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 157188431693 and 157188431702.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (157188431759) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5301564 + ... + 5331130.

It is an arithmetic number, because the mean of its divisors is an integer number (10153414656).

Almost surely, 2^157188431749 is an apocalyptic number.

It is an amenable number.

157188431749 is a deficient number, since it is larger than the sum of its proper divisors (5266202747).

157188431749 is a wasteful number, since it uses less digits than its factorization.

157188431749 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30756.

The product of its digits is 6773760, while the sum is 58.

The spelling of 157188431749 in words is "one hundred fifty-seven billion, one hundred eighty-eight million, four hundred thirty-one thousand, seven hundred forty-nine".