1381465626 has 16 divisors (see below), whose sum is σ = 2769530400. Its totient is φ = 459388688.

The previous prime is 1381465619. The next prime is 1381465627. The reversal of 1381465626 is 6265641831.

It is not an unprimeable number, because it can be changed into a prime (1381465627) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 272241 + ... + 277268.

It is an arithmetic number, because the mean of its divisors is an integer number (173095650).

Almost surely, 2^1381465626 is an apocalyptic number.

1381465626 is an abundant number, since it is smaller than the sum of its proper divisors (1388064774).

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

1381465626 is a wasteful number, since it uses less digits than its factorization.

1381465626 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 549933.

The product of its digits is 207360, while the sum is 42.

The square root of 1381465626 is about 37168.0726699677. The cubic root of 1381465626 is about 1113.7302808643.

The spelling of 1381465626 in words is "one billion, three hundred eighty-one million, four hundred sixty-five thousand, six hundred twenty-six".