1613398500 has 432 divisors, whose sum is σ = 6162653952. Its totient is φ = 367416000.

The previous prime is 1613398487. The next prime is 1613398511. The reversal of 1613398500 is 58933161.

It is a happy number.

1613398500 is a `hidden beast` number, since 1 + 61 + 3 + 3 + 98 + 500 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 5953365 + ... + 5953635.

Almost surely, 2^1613398500 is an apocalyptic number.

1613398500 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1613398500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3081326976).

1613398500 is an abundant number, since it is smaller than the sum of its proper divisors (4549255452).

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

1613398500 is a wasteful number, since it uses less digits than its factorization.

1613398500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 319 (or 288 counting only the distinct ones).

The product of its (nonzero) digits is 19440, while the sum is 36.

The square root of 1613398500 is about 40167.1320858236. The cubic root of 1613398500 is about 1172.8628119070.

The spelling of 1613398500 in words is "one billion, six hundred thirteen million, three hundred ninety-eight thousand, five hundred".