157884646 has 4 divisors (see below), whose sum is σ = 236826972. Its totient is φ = 78942322.

The previous prime is 157884641. The next prime is 157884659. The reversal of 157884646 is 646488751.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 646488751 = 179 ⋅3611669.

It is a super-2 number, since 2×157884646² = 49855122885090632, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 157884646.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (157884641) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39471160 + ... + 39471163.

It is an arithmetic number, because the mean of its divisors is an integer number (59206743).

Almost surely, 2^157884646 is an apocalyptic number.

157884646 is a deficient number, since it is larger than the sum of its proper divisors (78942326).

157884646 is an equidigital number, since it uses as much as digits as its factorization.

157884646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78942325.

The product of its digits is 1290240, while the sum is 49.

The square root of 157884646 is about 12565.2157164133. The cubic root of 157884646 is about 540.4804206523.

The spelling of 157884646 in words is "one hundred fifty-seven million, eight hundred eighty-four thousand, six hundred forty-six".