1375990618 has 8 divisors (see below), whose sum is σ = 2064453300. Its totient is φ = 687839520.

The previous prime is 1375990597. The next prime is 1375990631. The reversal of 1375990618 is 8160995731.

It can be written as a sum of positive squares in 2 ways, for example, as 1365080809 + 10909809 = 36947^2 + 3303^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 66523 + ... + 84718.

Almost surely, 2^1375990618 is an apocalyptic number.

1375990618 is a deficient number, since it is larger than the sum of its proper divisors (688462682).

1375990618 is a wasteful number, since it uses less digits than its factorization.

1375990618 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 155792.

The product of its (nonzero) digits is 408240, while the sum is 49.

The square root of 1375990618 is about 37094.3475208825. The cubic root of 1375990618 is about 1112.2570253869.

The spelling of 1375990618 in words is "one billion, three hundred seventy-five million, nine hundred ninety thousand, six hundred eighteen".