1612803440 has 40 divisors (see below), whose sum is σ = 3751701840. Its totient is φ = 644788736.

The previous prime is 1612803421. The next prime is 1612803463. The reversal of 1612803440 is 443082161.

1612803440 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (40).

It is a super-2 number, since 2×1612803440² = 5202269872151667200, which contains 22 as substring.

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, 202412 + ... + 210228.

It is an arithmetic number, because the mean of its divisors is an integer number (93792546).

Almost surely, 2^1612803440 is an apocalyptic number.

1612803440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1612803440 is an abundant number, since it is smaller than the sum of its proper divisors (2138898400).

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

1612803440 is a wasteful number, since it uses less digits than its factorization.

1612803440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10409 (or 10403 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 29.

The square root of 1612803440 is about 40159.7241026380. The cubic root of 1612803440 is about 1172.7186008795.

The spelling of 1612803440 in words is "one billion, six hundred twelve million, eight hundred three thousand, four hundred forty".