1345186620 has 36 divisors (see below), whose sum is σ = 4080399960. Its totient is φ = 358716384.

The previous prime is 1345186613. The next prime is 1345186639. The reversal of 1345186620 is 266815431.

It is a happy number.

1345186620 is a `hidden beast` number, since 13 + 4 + 5 + 18 + 6 + 620 = 666.

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

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3736450 + ... + 3736809.

Almost surely, 2^1345186620 is an apocalyptic number.

1345186620 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1345186620 is an abundant number, since it is smaller than the sum of its proper divisors (2735213340).

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

1345186620 is a wasteful number, since it uses less digits than its factorization.

1345186620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7473274 (or 7473269 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 36.

The square root of 1345186620 is about 36676.7858460907. The cubic root of 1345186620 is about 1103.8943562269.

The spelling of 1345186620 in words is "one billion, three hundred forty-five million, one hundred eighty-six thousand, six hundred twenty".