1365978730 has 96 divisors (see below), whose sum is σ = 2744432640. Its totient is φ = 488816640.

The previous prime is 1365978697. The next prime is 1365978737. The reversal of 1365978730 is 378795631.

It is not an unprimeable number, because it can be changed into a prime (1365978737) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 7077514 + ... + 7077706.

It is an arithmetic number, because the mean of its divisors is an integer number (28587840).

Almost surely, 2^1365978730 is an apocalyptic number.

1365978730 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1365978730 is an abundant number, since it is smaller than the sum of its proper divisors (1378453910).

1365978730 is a wasteful number, since it uses less digits than its factorization.

1365978730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 344 (or 327 counting only the distinct ones).

The product of its (nonzero) digits is 952560, while the sum is 49.

The square root of 1365978730 is about 36959.1494761446. The cubic root of 1365978730 is about 1109.5528133998.

The spelling of 1365978730 in words is "one billion, three hundred sixty-five million, nine hundred seventy-eight thousand, seven hundred thirty".