1301664138 has 16 divisors (see below), whose sum is σ = 2607681600. Its totient is φ = 433162496.

The previous prime is 1301664131. The next prime is 1301664197. The reversal of 1301664138 is 8314661031.

It is a junction number, because it is equal to n+sod(n) for n = 1301664099 and 1301664108.

It is not an unprimeable number, because it can be changed into a prime (1301664131) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 177495 + ... + 184682.

It is an arithmetic number, because the mean of its divisors is an integer number (162980100).

Almost surely, 2^1301664138 is an apocalyptic number.

1301664138 is an abundant number, since it is smaller than the sum of its proper divisors (1306017462).

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

1301664138 is a wasteful number, since it uses less digits than its factorization.

1301664138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 362781.

The product of its (nonzero) digits is 10368, while the sum is 33.

The square root of 1301664138 is about 36078.5828158480. The cubic root of 1301664138 is about 1091.8583840693.

The spelling of 1301664138 in words is "one billion, three hundred one million, six hundred sixty-four thousand, one hundred thirty-eight".