1900499651 has 2 divisors, whose sum is σ = 1900499652. Its totient is φ = 1900499650.

The previous prime is 1900499647. The next prime is 1900499663. The reversal of 1900499651 is 1569940091.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1900499651 - 2² = 1900499647 is a prime.

It is a super-2 number, since 2×1900499651² = 7223797846902243602, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1900499611) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 950249825 + 950249826.

It is an arithmetic number, because the mean of its divisors is an integer number (950249826).

Almost surely, 2^1900499651 is an apocalyptic number.

1900499651 is a deficient number, since it is larger than the sum of its proper divisors (1).

1900499651 is an equidigital number, since it uses as much as digits as its factorization.

1900499651 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 87480, while the sum is 44.

The square root of 1900499651 is about 43594.7204486965. The cubic root of 1900499651 is about 1238.6708900981.

The spelling of 1900499651 in words is "one billion, nine hundred million, four hundred ninety-nine thousand, six hundred fifty-one".