1377168690 has 32 divisors (see below), whose sum is σ = 3309917760. Its totient is φ = 366721344.

The previous prime is 1377168599. The next prime is 1377168701. The reversal of 1377168690 is 968617731.

It is a happy number.

It is a super-2 number, since 2×1377168690² = 3793187201432632200, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11104 + ... + 53643.

It is an arithmetic number, because the mean of its divisors is an integer number (103434930).

Almost surely, 2^1377168690 is an apocalyptic number.

1377168690 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1377168690 is an abundant number, since it is smaller than the sum of its proper divisors (1932749070).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1377168690 is a wasteful number, since it uses less digits than its factorization.

1377168690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65466.

The product of its (nonzero) digits is 381024, while the sum is 48.

The square root of 1377168690 is about 37110.2235239833. The cubic root of 1377168690 is about 1112.5743592093.

The spelling of 1377168690 in words is "one billion, three hundred seventy-seven million, one hundred sixty-eight thousand, six hundred ninety".