1989941499 has 60 divisors (see below), whose sum is σ = 3724048944. Its totient is φ = 1049612256.

The previous prime is 1989941489. The next prime is 1989941501. The reversal of 1989941499 is 9941499891.

1989941499 is a `hidden beast` number, since 19 + 8 + 99 + 41 + 499 = 666.

It is not a de Polignac number, because 1989941499 - 2⁵ = 1989941467 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is not an unprimeable number, because it can be changed into a prime (1989941419) by changing a digit.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 32314 + ... + 70880.

Almost surely, 2^1989941499 is an apocalyptic number.

1989941499 is a deficient number, since it is larger than the sum of its proper divisors (1734107445).

1989941499 is a wasteful number, since it uses less digits than its factorization.

1989941499 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38606 (or 38590 counting only the distinct ones).

The product of its digits is 7558272, while the sum is 63.

The square root of 1989941499 is about 44608.7603391979. The cubic root of 1989941499 is about 1257.8053462630.

The spelling of 1989941499 in words is "one billion, nine hundred eighty-nine million, nine hundred forty-one thousand, four hundred ninety-nine".