1376631465 has 16 divisors (see below), whose sum is σ = 2402847936. Its totient is φ = 667457600.

The previous prime is 1376631463. The next prime is 1376631499. The reversal of 1376631465 is 5641366731.

It is not a de Polignac number, because 1376631465 - 2¹ = 1376631463 is a prime.

It is a super-2 number, since 2×1376631465² = 3790228380856092450, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1376631461) 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, 4171446 + ... + 4171775.

It is an arithmetic number, because the mean of its divisors is an integer number (150177996).

Almost surely, 2^1376631465 is an apocalyptic number.

1376631465 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1376631465 is a deficient number, since it is larger than the sum of its proper divisors (1026216471).

1376631465 is a wasteful number, since it uses less digits than its factorization.

1376631465 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8343240.

The product of its digits is 272160, while the sum is 42.

The square root of 1376631465 is about 37102.9845834537. The cubic root of 1376631465 is about 1112.4296709318.

It can be divided in two parts, 137663 and 1465, that added together give a triangular number (139128 = T₅₂₇).

The spelling of 1376631465 in words is "one billion, three hundred seventy-six million, six hundred thirty-one thousand, four hundred sixty-five".