138553662 has 32 divisors (see below), whose sum is σ = 314133120. Its totient is φ = 40387680.

The previous prime is 138553651. The next prime is 138553669. The reversal of 138553662 is 266355831.

It is a super-2 number, since 2×138553662² = 38394234507220488, which contains 22 as substring.

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 138553662.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138553669) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 45264 + ... + 48227.

It is an arithmetic number, because the mean of its divisors is an integer number (9816660).

Almost surely, 2^138553662 is an apocalyptic number.

138553662 is an abundant number, since it is smaller than the sum of its proper divisors (175579458).

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

138553662 is a wasteful number, since it uses less digits than its factorization.

138553662 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 93528.

The product of its digits is 129600, while the sum is 39.

The square root of 138553662 is about 11770.8819550618. The cubic root of 138553662 is about 517.4550975066.

The spelling of 138553662 in words is "one hundred thirty-eight million, five hundred fifty-three thousand, six hundred sixty-two".