61949388 has 24 divisors (see below), whose sum is σ = 145078192. Its totient is φ = 20574144.

The previous prime is 61949383. The next prime is 61949441. The reversal of 61949388 is 88394916.

61949388 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Smith number, since the sum of its digits (48) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (61949383) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5995 + ... + 12642.

Almost surely, 2^61949388 is an apocalyptic number.

It is an amenable number.

61949388 is an abundant number, since it is smaller than the sum of its proper divisors (83128804).

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

61949388 is a wasteful number, since it uses less digits than its factorization.

61949388 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18921 (or 18919 counting only the distinct ones).

The product of its digits is 373248, while the sum is 48.

The square root of 61949388 is about 7870.7933526424. The cubic root of 61949388 is about 395.6814344398.

The spelling of 61949388 in words is "sixty-one million, nine hundred forty-nine thousand, three hundred eighty-eight".