138149463 has 8 divisors (see below), whose sum is σ = 195034608. Its totient is φ = 86681984.

The previous prime is 138149461. The next prime is 138149483. The reversal of 138149463 is 364941831.

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

It is a cyclic number.

It is not a de Polignac number, because 138149463 - 2¹ = 138149461 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138149461) 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, 1354356 + ... + 1354457.

It is an arithmetic number, because the mean of its divisors is an integer number (24379326).

Almost surely, 2^138149463 is an apocalyptic number.

138149463 is a deficient number, since it is larger than the sum of its proper divisors (56885145).

138149463 is a wasteful number, since it uses less digits than its factorization.

138149463 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2708833.

The product of its digits is 62208, while the sum is 39.

The square root of 138149463 is about 11753.6999706475. The cubic root of 138149463 is about 516.9514212955.

The spelling of 138149463 in words is "one hundred thirty-eight million, one hundred forty-nine thousand, four hundred sixty-three".