3890372649 has 12 divisors (see below), whose sum is σ = 5372202576. Its totient is φ = 2504146288.

The previous prime is 3890372639. The next prime is 3890372693. The reversal of 3890372649 is 9462730983.

It is not a de Polignac number, because 3890372649 - 2⁸ = 3890372393 is a prime.

It is not an unprimeable number, because it can be changed into a prime (3890372639) 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, 768459 + ... + 773504.

It is an arithmetic number, because the mean of its divisors is an integer number (447683548).

Almost surely, 2^3890372649 is an apocalyptic number.

It is an amenable number.

3890372649 is a deficient number, since it is larger than the sum of its proper divisors (1481829927).

3890372649 is a wasteful number, since it uses less digits than its factorization.

3890372649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1542024 (or 1541995 counting only the distinct ones).

The product of its (nonzero) digits is 1959552, while the sum is 51.

The square root of 3890372649 is about 62372.8518588015. The cubic root of 3890372649 is about 1572.7646325651.

The spelling of 3890372649 in words is "three billion, eight hundred ninety million, three hundred seventy-two thousand, six hundred forty-nine".