3654637690 has 32 divisors (see below), whose sum is σ = 7274702016. Its totient is φ = 1310751360.

The previous prime is 3654637663. The next prime is 3654637691. The reversal of 3654637690 is 967364563.

It is a super-2 number, since 2×3654637690² = 26712753290337072200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (3654637691) 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, 219532 + ... + 235591.

It is an arithmetic number, because the mean of its divisors is an integer number (227334438).

Almost surely, 2^3654637690 is an apocalyptic number.

3654637690 is a deficient number, since it is larger than the sum of its proper divisors (3620064326).

3654637690 is a wasteful number, since it uses less digits than its factorization.

3654637690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 455214.

The product of its (nonzero) digits is 2449440, while the sum is 49.

The square root of 3654637690 is about 60453.5994792700. The cubic root of 3654637690 is about 1540.3335548360. Note that the first 3 decimals are identical.

The spelling of 3654637690 in words is "three billion, six hundred fifty-four million, six hundred thirty-seven thousand, six hundred ninety".