1366945810 has 16 divisors (see below), whose sum is σ = 2463304896. Its totient is φ = 546155568.

The previous prime is 1366945799. The next prime is 1366945813. The reversal of 1366945810 is 185496631.

It is a super-2 number, since 2×1366945810² = 3737081694953112200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1366945813) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 68574 + ... + 86233.

It is an arithmetic number, because the mean of its divisors is an integer number (153956556).

Almost surely, 2^1366945810 is an apocalyptic number.

1366945810 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1366945810 is a deficient number, since it is larger than the sum of its proper divisors (1096359086).

1366945810 is a wasteful number, since it uses less digits than its factorization.

1366945810 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 155697.

The product of its (nonzero) digits is 155520, while the sum is 43.

The square root of 1366945810 is about 36972.2302546114. The cubic root of 1366945810 is about 1109.8145971756.

The spelling of 1366945810 in words is "one billion, three hundred sixty-six million, nine hundred forty-five thousand, eight hundred ten".