9001152981 has 12 divisors (see below), whose sum is σ = 13033459660. Its totient is φ = 5986094400.

The previous prime is 9001152947. The next prime is 9001152983. The reversal of 9001152981 is 1892511009.

It can be written as a sum of positive squares in 2 ways, for example, as 5862352356 + 3138800625 = 76566^2 + 56025^2 .

It is not a de Polignac number, because 9001152981 - 2¹⁵ = 9001120213 is a prime.

It is a super-2 number, since 2×9001152981² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9001152983) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1218970 + ... + 1226331.

Almost surely, 2^9001152981 is an apocalyptic number.

It is an amenable number.

9001152981 is a deficient number, since it is larger than the sum of its proper divisors (4032306679).

9001152981 is a wasteful number, since it uses less digits than its factorization.

9001152981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2445716 (or 2445713 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 36.

The square root of 9001152981 is about 94874.4063538740. The cubic root of 9001152981 is about 2080.1726450785.

The spelling of 9001152981 in words is "nine billion, one million, one hundred fifty-two thousand, nine hundred eighty-one".