1913761998 has 32 divisors (see below), whose sum is σ = 4389995520. Its totient is φ = 617342040.

The previous prime is 1913761987. The next prime is 1913762041. The reversal of 1913761998 is 8991673191.

It is a happy number.

1913761998 is a `hidden beast` number, since 1 + 9 + 13 + 7 + 619 + 9 + 8 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 569940 + ... + 573287.

It is an arithmetic number, because the mean of its divisors is an integer number (137187360).

Almost surely, 2^1913761998 is an apocalyptic number.

1913761998 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

1913761998 is an abundant number, since it is smaller than the sum of its proper divisors (2476233522).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1913761998 is a wasteful number, since it uses less digits than its factorization.

1913761998 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1143269 (or 1143263 counting only the distinct ones).

The product of its digits is 734832, while the sum is 54.

The square root of 1913761998 is about 43746.5655566240. The cubic root of 1913761998 is about 1241.5455057148.

The spelling of 1913761998 in words is "one billion, nine hundred thirteen million, seven hundred sixty-one thousand, nine hundred ninety-eight".