1613189440 has 56 divisors (see below), whose sum is σ = 3846039552. Its totient is φ = 644497920.

The previous prime is 1613189437. The next prime is 1613189453. The reversal of 1613189440 is 449813161.

It is a self number, because there is not a number n which added to its sum of digits gives 1613189440.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 314577 + ... + 319663.

Almost surely, 2^1613189440 is an apocalyptic number.

1613189440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1613189440 is an abundant number, since it is smaller than the sum of its proper divisors (2232850112).

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

1613189440 is an equidigital number, since it uses as much as digits as its factorization.

1613189440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6095 (or 6085 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 37.

The square root of 1613189440 is about 40164.5296250311. The cubic root of 1613189440 is about 1172.8121508766.

The spelling of 1613189440 in words is "one billion, six hundred thirteen million, one hundred eighty-nine thousand, four hundred forty".