1900763649 has 24 divisors (see below), whose sum is σ = 2852164224. Its totient is φ = 1218840000.

The previous prime is 1900763639. The next prime is 1900763651. The reversal of 1900763649 is 9463670091.

1900763649 is a `hidden beast` number, since 1 + 9 + 0 + 0 + 7 + 636 + 4 + 9 = 666.

It is not a de Polignac number, because 1900763649 - 2⁸ = 1900763393 is a prime.

It is a super-2 number, since 2×1900763649² = 7225804898719590402, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1900763609) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 10077 + ... + 62474.

It is an arithmetic number, because the mean of its divisors is an integer number (118840176).

Almost surely, 2^1900763649 is an apocalyptic number.

It is an amenable number.

1900763649 is a deficient number, since it is larger than the sum of its proper divisors (951400575).

1900763649 is a wasteful number, since it uses less digits than its factorization.

1900763649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72669 (or 72666 counting only the distinct ones).

The product of its (nonzero) digits is 244944, while the sum is 45.

The square root of 1900763649 is about 43597.7482102000. The cubic root of 1900763649 is about 1238.7282419454.

The spelling of 1900763649 in words is "one billion, nine hundred million, seven hundred sixty-three thousand, six hundred forty-nine".