1338653901 has 12 divisors (see below), whose sum is σ = 1932731808. Its totient is φ = 823786704.

The previous prime is 1338653887. The next prime is 1338653917. The reversal of 1338653901 is 1093568331.

It is not a de Polignac number, because 1338653901 - 2⁶ = 1338653837 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a self number, because there is not a number n which added to its sum of digits gives 1338653901.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1338653401) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1319665 + ... + 1320678.

It is an arithmetic number, because the mean of its divisors is an integer number (161060984).

Almost surely, 2^1338653901 is an apocalyptic number.

It is an amenable number.

1338653901 is a deficient number, since it is larger than the sum of its proper divisors (594077907).

1338653901 is a wasteful number, since it uses less digits than its factorization.

1338653901 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2640372 (or 2640359 counting only the distinct ones).

The product of its (nonzero) digits is 58320, while the sum is 39.

The square root of 1338653901 is about 36587.6195044171. The cubic root of 1338653901 is about 1102.1044838751.

The spelling of 1338653901 in words is "one billion, three hundred thirty-eight million, six hundred fifty-three thousand, nine hundred one".