1366649290 has 32 divisors (see below), whose sum is σ = 2618568000. Its totient is φ = 512062848.

The previous prime is 1366649287. The next prime is 1366649299. The reversal of 1366649290 is 929466631.

It is a self number, because there is not a number n which added to its sum of digits gives 1366649290.

It is not an unprimeable number, because it can be changed into a prime (1366649299) 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, 23500 + ... + 57319.

It is an arithmetic number, because the mean of its divisors is an integer number (81830250).

Almost surely, 2^1366649290 is an apocalyptic number.

1366649290 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1366649290 is a deficient number, since it is larger than the sum of its proper divisors (1251918710).

1366649290 is a wasteful number, since it uses less digits than its factorization.

1366649290 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80934.

The product of its (nonzero) digits is 419904, while the sum is 46.

The square root of 1366649290 is about 36968.2200004274. The cubic root of 1366649290 is about 1109.7343438060.

The spelling of 1366649290 in words is "one billion, three hundred sixty-six million, six hundred forty-nine thousand, two hundred ninety".