1900499653 has 18 divisors (see below), whose sum is σ = 2084443634. Its totient is φ = 1722532224.

The previous prime is 1900499651. The next prime is 1900499663. The reversal of 1900499653 is 3569940091.

It can be written as a sum of positive squares in 3 ways, for example, as 366837409 + 1533662244 = 19153^2 + 39162^2 .

It is not a de Polignac number, because 1900499653 - 2¹ = 1900499651 is a prime.

It is a super-2 number, since 2×1900499653² = 7223797862106240818, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1900499651) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 16818525 + ... + 16818637.

Almost surely, 2^1900499653 is an apocalyptic number.

1900499653 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

1900499653 is a deficient number, since it is larger than the sum of its proper divisors (183943981).

1900499653 is an equidigital number, since it uses as much as digits as its factorization.

1900499653 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 453 (or 233 counting only the distinct ones).

The product of its (nonzero) digits is 262440, while the sum is 46.

The square root of 1900499653 is about 43594.7204716351. The cubic root of 1900499653 is about 1238.6708905326.

The spelling of 1900499653 in words is "one billion, nine hundred million, four hundred ninety-nine thousand, six hundred fifty-three".