157799434 has 24 divisors (see below), whose sum is σ = 258307812. Its totient is φ = 71871360.

The previous prime is 157799431. The next prime is 157799437. The reversal of 157799434 is 434997751.

It is an interprime number because it is at equal distance from previous prime (157799431) and next prime (157799437).

It can be written as a sum of positive squares in 2 ways, for example, as 136960209 + 20839225 = 11703^2 + 4565^2 .

It is a super-2 number, since 2×157799434² = 49801322741440712, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (157799431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 178674 + ... + 179554.

Almost surely, 2^157799434 is an apocalyptic number.

157799434 is a deficient number, since it is larger than the sum of its proper divisors (100508378).

157799434 is an equidigital number, since it uses as much as digits as its factorization.

157799434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1062 (or 979 counting only the distinct ones).

The product of its digits is 952560, while the sum is 49.

The square root of 157799434 is about 12561.8244693993. The cubic root of 157799434 is about 540.3831688363.

The spelling of 157799434 in words is "one hundred fifty-seven million, seven hundred ninety-nine thousand, four hundred thirty-four".