61938135 has 32 divisors (see below), whose sum is σ = 125844480. Its totient is φ = 28314144.

The previous prime is 61938131. The next prime is 61938137. The reversal of 61938135 is 53183916.

It is a happy number.

61938135 is a `hidden beast` number, since 619 + 3 + 8 + 1 + 35 = 666.

It is not a de Polignac number, because 61938135 - 2² = 61938131 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 61938135.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61938131) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 31827 + ... + 33716.

It is an arithmetic number, because the mean of its divisors is an integer number (3932640).

Almost surely, 2^61938135 is an apocalyptic number.

61938135 is an abundant number, since it is smaller than the sum of its proper divisors (63906345).

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

61938135 is a wasteful number, since it uses less digits than its factorization.

61938135 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65564 (or 65558 counting only the distinct ones).

The product of its digits is 19440, while the sum is 36.

The square root of 61938135 is about 7870.0784621248. The cubic root of 61938135 is about 395.6574747045.

The spelling of 61938135 in words is "sixty-one million, nine hundred thirty-eight thousand, one hundred thirty-five".