151771968 has 98 divisors (see below), whose sum is σ = 451690994. Its totient is φ = 50575104.

The previous prime is 151771933. The next prime is 151771969. The reversal of 151771968 is 869177151.

151771968 is a `hidden beast` number, since 1 + 517 + 71 + 9 + 68 = 666.

It can be written as a sum of positive squares in only one way, i.e., 151585344 + 186624 = 12312^2 + 432^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (151771969) by changing a digit.

It is a polite number, since it can be written in 13 ways as a sum of consecutive naturals, for example, 45030 + ... + 48282.

Almost surely, 2^151771968 is an apocalyptic number.

151771968 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 151771968, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (225845497).

151771968 is an abundant number, since it is smaller than the sum of its proper divisors (299919026).

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

151771968 is an frugal number, since it uses more digits than its factorization.

151771968 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3283 (or 3258 counting only the distinct ones).

The product of its digits is 105840, while the sum is 45.

The square root of 151771968 is about 12319.5766161017. The cubic root of 151771968 is about 533.4133185594.

The spelling of 151771968 in words is "one hundred fifty-one million, seven hundred seventy-one thousand, nine hundred sixty-eight".