990160145 has 16 divisors (see below), whose sum is σ = 1314178320. Its totient is φ = 711431424.

The previous prime is 990160141. The next prime is 990160147. The reversal of 990160145 is 541061099.

It can be written as a sum of positive squares in 8 ways, for example, as 28912129 + 961248016 = 5377^2 + 31004^2 .

It is a cyclic number.

It is not a de Polignac number, because 990160145 - 2² = 990160141 is a prime.

It is a super-2 number, since 2×990160145² = 1960834225492842050, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (990160141) 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, 203450 + ... + 208259.

It is an arithmetic number, because the mean of its divisors is an integer number (82136145).

Almost surely, 2^990160145 is an apocalyptic number.

It is an amenable number.

990160145 is a deficient number, since it is larger than the sum of its proper divisors (324018175).

990160145 is a wasteful number, since it uses less digits than its factorization.

990160145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 411764.

The product of its (nonzero) digits is 9720, while the sum is 35.

The square root of 990160145 is about 31466.8102133025. The cubic root of 990160145 is about 996.7092310518.

The spelling of 990160145 in words is "nine hundred ninety million, one hundred sixty thousand, one hundred forty-five".