1612138040 has 64 divisors (see below), whose sum is σ = 3736998720. Its totient is φ = 625536000.

The previous prime is 1612138039. The next prime is 1612138097. The reversal of 1612138040 is 408312161.

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, 294125 + ... + 299555.

It is an arithmetic number, because the mean of its divisors is an integer number (58390605).

Almost surely, 2^1612138040 is an apocalyptic number.

1612138040 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 1612138040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1868499360).

1612138040 is an abundant number, since it is smaller than the sum of its proper divisors (2124860680).

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

1612138040 is a wasteful number, since it uses less digits than its factorization.

1612138040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5664 (or 5660 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 26.

The square root of 1612138040 is about 40151.4388285152. The cubic root of 1612138040 is about 1172.5573011459.

The spelling of 1612138040 in words is "one billion, six hundred twelve million, one hundred thirty-eight thousand, forty".