156742818 has 16 divisors (see below), whose sum is σ = 329985120. Its totient is φ = 49497696.

The previous prime is 156742801. The next prime is 156742829. The reversal of 156742818 is 818247651.

156742818 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×156742818² = 49136621989162248, 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 156742818.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 687355 + ... + 687582.

It is an arithmetic number, because the mean of its divisors is an integer number (20624070).

Almost surely, 2^156742818 is an apocalyptic number.

156742818 is an abundant number, since it is smaller than the sum of its proper divisors (173242302).

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

156742818 is a wasteful number, since it uses less digits than its factorization.

156742818 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1374961.

The product of its digits is 107520, while the sum is 42.

The square root of 156742818 is about 12519.6972008112. The cubic root of 156742818 is about 539.1743417813.

The spelling of 156742818 in words is "one hundred fifty-six million, seven hundred forty-two thousand, eight hundred eighteen".