3621122290 has 64 divisors (see below), whose sum is σ = 6799819104. Its totient is φ = 1387266048.

The previous prime is 3621122273. The next prime is 3621122291. The reversal of 3621122290 is 922211263.

It can be written as a sum of positive squares in 16 ways, for example, as 639634681 + 2981487609 = 25291^2 + 54603^2 .

It is a super-2 number, since 2×3621122290² = 26225053278269688200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (3621122291) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 10745002 + ... + 10745338.

Almost surely, 2^3621122290 is an apocalyptic number.

3621122290 is a deficient number, since it is larger than the sum of its proper divisors (3178696814).

3621122290 is a wasteful number, since it uses less digits than its factorization.

3621122290 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 751.

The product of its (nonzero) digits is 2592, while the sum is 28.

The square root of 3621122290 is about 60175.7616486904. The cubic root of 3621122290 is about 1535.6104678207.

The spelling of 3621122290 in words is "three billion, six hundred twenty-one million, one hundred twenty-two thousand, two hundred ninety".