152818981 has 16 divisors (see below), whose sum is σ = 179625600. Its totient is φ = 127303488.

The previous prime is 152818907. The next prime is 152818999. The reversal of 152818981 is 189818251.

152818981 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 152818981 - 2¹³ = 152810789 is a prime.

It is a super-2 number, since 2×152818981² = 46707281907756722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (152818381) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 38550 + ... + 42328.

It is an arithmetic number, because the mean of its divisors is an integer number (11226600).

Almost surely, 2^152818981 is an apocalyptic number.

It is an amenable number.

152818981 is a deficient number, since it is larger than the sum of its proper divisors (26806619).

152818981 is a wasteful number, since it uses less digits than its factorization.

152818981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3948.

The product of its digits is 46080, while the sum is 43.

The square root of 152818981 is about 12361.9974518684. The cubic root of 152818981 is about 534.6371091341.

The spelling of 152818981 in words is "one hundred fifty-two million, eight hundred eighteen thousand, nine hundred eighty-one".