138961802 has 8 divisors (see below), whose sum is σ = 238220256. Its totient is φ = 59555052.

The previous prime is 138961793. The next prime is 138961807. The reversal of 138961802 is 208169831.

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

It is not an unprimeable number, because it can be changed into a prime (138961807) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4962908 + ... + 4962935.

It is an arithmetic number, because the mean of its divisors is an integer number (29777532).

Almost surely, 2^138961802 is an apocalyptic number.

138961802 is a deficient number, since it is larger than the sum of its proper divisors (99258454).

138961802 is an equidigital number, since it uses as much as digits as its factorization.

138961802 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9925852.

The product of its (nonzero) digits is 20736, while the sum is 38.

The square root of 138961802 is about 11788.2060552062. The cubic root of 138961802 is about 517.9626916676.

The spelling of 138961802 in words is "one hundred thirty-eight million, nine hundred sixty-one thousand, eight hundred two".