151818768 has 90 divisors (see below), whose sum is σ = 444380846. Its totient is φ = 48381696.

The previous prime is 151818743. The next prime is 151818809. The reversal of 151818768 is 867818151.

It can be written as a sum of positive squares in only one way, i.e., 140849424 + 10969344 = 11868^2 + 3312^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 75180 + ... + 77172.

Almost surely, 2^151818768 is an apocalyptic number.

151818768 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 151818768, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (222190423).

151818768 is an abundant number, since it is smaller than the sum of its proper divisors (292562078).

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

151818768 is a wasteful number, since it uses less digits than its factorization.

151818768 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2053 (or 2021 counting only the distinct ones).

The product of its digits is 107520, while the sum is 45.

The square root of 151818768 is about 12321.4758856234. The cubic root of 151818768 is about 533.4681402285.

The spelling of 151818768 in words is "one hundred fifty-one million, eight hundred eighteen thousand, seven hundred sixty-eight".