1385611976 has 16 divisors (see below), whose sum is σ = 2969168640. Its totient is φ = 593833680.

The previous prime is 1385611973. The next prime is 1385612003. The reversal of 1385611976 is 6791165831.

It is a self number, because there is not a number n which added to its sum of digits gives 1385611976.

It is not an unprimeable number, because it can be changed into a prime (1385611973) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12371480 + ... + 12371591.

It is an arithmetic number, because the mean of its divisors is an integer number (185573040).

Almost surely, 2^1385611976 is an apocalyptic number.

It is an amenable number.

1385611976 is an abundant number, since it is smaller than the sum of its proper divisors (1583556664).

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

1385611976 is a wasteful number, since it uses less digits than its factorization.

1385611976 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24743084 (or 24743080 counting only the distinct ones).

The product of its digits is 272160, while the sum is 47.

The square root of 1385611976 is about 37223.8092623525. The cubic root of 1385611976 is about 1114.8434230856.

The spelling of 1385611976 in words is "one billion, three hundred eighty-five million, six hundred eleven thousand, nine hundred seventy-six".