1346815980 has 36 divisors (see below), whose sum is σ = 4085342352. Its totient is φ = 359150880.

The previous prime is 1346815979. The next prime is 1346816033. The reversal of 1346815980 is 895186431.

1346815980 is a `hidden beast` number, since 13 + 46 + 8 + 1 + 598 + 0 = 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 (45).

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, 3740976 + ... + 3741335.

It is an arithmetic number, because the mean of its divisors is an integer number (113481732).

Almost surely, 2^1346815980 is an apocalyptic number.

1346815980 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1346815980 is an abundant number, since it is smaller than the sum of its proper divisors (2738526372).

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

1346815980 is a wasteful number, since it uses less digits than its factorization.

1346815980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7482326 (or 7482321 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 45.

The square root of 1346815980 is about 36698.9915392780. The cubic root of 1346815980 is about 1104.3398744837.

The spelling of 1346815980 in words is "one billion, three hundred forty-six million, eight hundred fifteen thousand, nine hundred eighty".