1309474880 has 56 divisors (see below), whose sum is σ = 3563648448. Its totient is φ = 448962048.

The previous prime is 1309474843. The next prime is 1309474891. The reversal of 1309474880 is 884749031.

It is a tau number, because it is divible by the number of its divisors (56).

It is a super-2 number, since 2×1309474880² = 3429448922702028800, 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, 290054 + ... + 294533.

Almost surely, 2^1309474880 is an apocalyptic number.

1309474880 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1309474880 is an abundant number, since it is smaller than the sum of its proper divisors (2254173568).

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

1309474880 is an equidigital number, since it uses as much as digits as its factorization.

1309474880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 584611 (or 584601 counting only the distinct ones).

The product of its (nonzero) digits is 193536, while the sum is 44.

The square root of 1309474880 is about 36186.6671579464. The cubic root of 1309474880 is about 1094.0379587710.

The spelling of 1309474880 in words is "one billion, three hundred nine million, four hundred seventy-four thousand, eight hundred eighty".