1366157830 has 32 divisors (see below), whose sum is σ = 2503143360. Its totient is φ = 536699520.

The previous prime is 1366157813. The next prime is 1366157831. The reversal of 1366157830 is 387516631.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1366157831) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 559372 + ... + 561808.

It is an arithmetic number, because the mean of its divisors is an integer number (78223230).

Almost surely, 2^1366157830 is an apocalyptic number.

1366157830 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1366157830 is a deficient number, since it is larger than the sum of its proper divisors (1136985530).

1366157830 is a wasteful number, since it uses less digits than its factorization.

1366157830 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3424.

The product of its (nonzero) digits is 90720, while the sum is 40.

The square root of 1366157830 is about 36961.5723420961. The cubic root of 1366157830 is about 1109.6013042048.

The spelling of 1366157830 in words is "one billion, three hundred sixty-six million, one hundred fifty-seven thousand, eight hundred thirty".