1913145600 has 108 divisors (see below), whose sum is σ = 6313842416. Its totient is φ = 510167040.

The previous prime is 1913145593. The next prime is 1913145617. The reversal of 1913145600 is 65413191.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 30622 + ... + 69021.

Almost surely, 2^1913145600 is an apocalyptic number.

1913145600 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1913145600 is an abundant number, since it is smaller than the sum of its proper divisors (4400696816).

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

1913145600 is an equidigital number, since it uses as much as digits as its factorization.

1913145600 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99672 (or 99653 counting only the distinct ones).

The product of its (nonzero) digits is 3240, while the sum is 30.

The square root of 1913145600 is about 43739.5198876257. The cubic root of 1913145600 is about 1241.4121961488.

Adding to 1913145600 its reverse (65413191), we get a palindrome (1978558791).

The spelling of 1913145600 in words is "one billion, nine hundred thirteen million, one hundred forty-five thousand, six hundred".