157156494 has 40 divisors (see below), whose sum is σ = 345935400. Its totient is φ = 47596560.

The previous prime is 157156459. The next prime is 157156499. The reversal of 157156494 is 494651751.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (157156499) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 86952 + ... + 88740.

It is an arithmetic number, because the mean of its divisors is an integer number (8648385).

Almost surely, 2^157156494 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 157156494, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (172967700).

157156494 is an abundant number, since it is smaller than the sum of its proper divisors (188778906).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

157156494 is an equidigital number, since it uses as much as digits as its factorization.

157156494 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1838 (or 1805 counting only the distinct ones).

The product of its digits is 151200, while the sum is 42.

The square root of 157156494 is about 12536.2073211957. The cubic root of 157156494 is about 539.6482551554.

It can be divided in two parts, 157 and 156494, that added together give a palindrome (156651).

The spelling of 157156494 in words is "one hundred fifty-seven million, one hundred fifty-six thousand, four hundred ninety-four".