1358960778 has 48 divisors (see below), whose sum is σ = 3368152320. Its totient is φ = 387916128.

The previous prime is 1358960761. The next prime is 1358960789. The reversal of 1358960778 is 8770698531.

It is a super-2 number, since 2×1358960778² = 3693548792284730568, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 151503 + ... + 160221.

It is an arithmetic number, because the mean of its divisors is an integer number (70169840).

Almost surely, 2^1358960778 is an apocalyptic number.

1358960778 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

1358960778 is an abundant number, since it is smaller than the sum of its proper divisors (2009191542).

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

1358960778 is a wasteful number, since it uses less digits than its factorization.

1358960778 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9971 (or 9968 counting only the distinct ones).

The product of its (nonzero) digits is 2540160, while the sum is 54.

The square root of 1358960778 is about 36864.0852049797. The cubic root of 1358960778 is about 1107.6493767572.

The spelling of 1358960778 in words is "one billion, three hundred fifty-eight million, nine hundred sixty thousand, seven hundred seventy-eight".