1913489999 has 2 divisors, whose sum is σ = 1913490000. Its totient is φ = 1913489998.

The previous prime is 1913489987. The next prime is 1913490017. The reversal of 1913489999 is 9999843191.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1913489999 - 2¹⁶ = 1913424463 is a prime.

It is a super-2 number, since 2×1913489999² = 7322887952546040002, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1913489909) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 956744999 + 956745000.

It is an arithmetic number, because the mean of its divisors is an integer number (956745000).

Almost surely, 2^1913489999 is an apocalyptic number.

1913489999 is a deficient number, since it is larger than the sum of its proper divisors (1).

1913489999 is an equidigital number, since it uses as much as digits as its factorization.

1913489999 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5668704, while the sum is 62.

The square root of 1913489999 is about 43743.4566421082. The cubic root of 1913489999 is about 1241.4866835038.

The spelling of 1913489999 in words is "one billion, nine hundred thirteen million, four hundred eighty-nine thousand, nine hundred ninety-nine".