138863013 has 8 divisors (see below), whose sum is σ = 186564576. Its totient is φ = 91868400.

The previous prime is 138862993. The next prime is 138863033. The reversal of 138863013 is 310368831.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (138862993) and next prime (138863033).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 138863013 - 2⁶ = 138862949 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138863033) 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, 176278 + ... + 177063.

It is an arithmetic number, because the mean of its divisors is an integer number (23320572).

Almost surely, 2^138863013 is an apocalyptic number.

It is an amenable number.

138863013 is a deficient number, since it is larger than the sum of its proper divisors (47701563).

138863013 is a wasteful number, since it uses less digits than its factorization.

138863013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 353475.

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

The square root of 138863013 is about 11784.0151476481. The cubic root of 138863013 is about 517.8399213669.

The spelling of 138863013 in words is "one hundred thirty-eight million, eight hundred sixty-three thousand, thirteen".