1383951664 has 10 divisors (see below), whose sum is σ = 2681406380. Its totient is φ = 691975824.

The previous prime is 1383951661. The next prime is 1383951677. The reversal of 1383951664 is 4661593831.

It is not an unprimeable number, because it can be changed into a prime (1383951661) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43248474 + ... + 43248505.

It is an arithmetic number, because the mean of its divisors is an integer number (268140638).

Almost surely, 2^1383951664 is an apocalyptic number.

It is an amenable number.

1383951664 is a deficient number, since it is larger than the sum of its proper divisors (1297454716).

1383951664 is an equidigital number, since it uses as much as digits as its factorization.

1383951664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86496987 (or 86496981 counting only the distinct ones).

The product of its digits is 466560, while the sum is 46.

The square root of 1383951664 is about 37201.5008299396. The cubic root of 1383951664 is about 1114.3979574106.

The spelling of 1383951664 in words is "one billion, three hundred eighty-three million, nine hundred fifty-one thousand, six hundred sixty-four".