1612699812 has 36 divisors (see below), whose sum is σ = 4078046700. Its totient is φ = 537368832.

The previous prime is 1612699807. The next prime is 1612699813. The reversal of 1612699812 is 2189962161.

It can be written as a sum of positive squares in 2 ways, for example, as 723825216 + 888874596 = 26904^2 + 29814^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-4 number, since 4×1612699812⁴ (a number of 38 digits) contains 4444 as substring.

It is not an unprimeable number, because it can be changed into a prime (1612699813) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 117064 + ... + 130112.

It is an arithmetic number, because the mean of its divisors is an integer number (113279075).

Almost surely, 2^1612699812 is an apocalyptic number.

1612699812 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1612699812 is an abundant number, since it is smaller than the sum of its proper divisors (2465346888).

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

1612699812 is a wasteful number, since it uses less digits than its factorization.

1612699812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16492 (or 16487 counting only the distinct ones).

The product of its digits is 93312, while the sum is 45.

The square root of 1612699812 is about 40158.4338838058. The cubic root of 1612699812 is about 1172.6934833144.

The spelling of 1612699812 in words is "one billion, six hundred twelve million, six hundred ninety-nine thousand, eight hundred twelve".