1383902961 has 64 divisors (see below), whose sum is σ = 2241331200. Its totient is φ = 742996800.

The previous prime is 1383902959. The next prime is 1383902983. The reversal of 1383902961 is 1692093831.

It is not a de Polignac number, because 1383902961 - 2¹ = 1383902959 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1383902951) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 3651270 + ... + 3651648.

It is an arithmetic number, because the mean of its divisors is an integer number (35020800).

Almost surely, 2^1383902961 is an apocalyptic number.

It is an amenable number.

1383902961 is a deficient number, since it is larger than the sum of its proper divisors (857428239).

1383902961 is a wasteful number, since it uses less digits than its factorization.

1383902961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 570.

The product of its (nonzero) digits is 69984, while the sum is 42.

The square root of 1383902961 is about 37200.8462403747. The cubic root of 1383902961 is about 1114.3848849019.

The spelling of 1383902961 in words is "one billion, three hundred eighty-three million, nine hundred two thousand, nine hundred sixty-one".