1345805412 has 24 divisors (see below), whose sum is σ = 3588814656. Its totient is φ = 384515808.

The previous prime is 1345805393. The next prime is 1345805423. The reversal of 1345805412 is 2145085431.

It is a super-2 number, since 2×1345805412² = 3622384413936979488, which contains 22 as substring.

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, 8010663 + ... + 8010830.

It is an arithmetic number, because the mean of its divisors is an integer number (149533944).

Almost surely, 2^1345805412 is an apocalyptic number.

1345805412 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1345805412 is an abundant number, since it is smaller than the sum of its proper divisors (2243009244).

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

1345805412 is a wasteful number, since it uses less digits than its factorization.

1345805412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16021507 (or 16021505 counting only the distinct ones).

The product of its (nonzero) digits is 19200, while the sum is 33.

The square root of 1345805412 is about 36685.2206208440. The cubic root of 1345805412 is about 1104.0635957641.

The spelling of 1345805412 in words is "one billion, three hundred forty-five million, eight hundred five thousand, four hundred twelve".