61953418 has 4 divisors (see below), whose sum is σ = 92930130. Its totient is φ = 30976708.

The previous prime is 61953413. The next prime is 61953443. The reversal of 61953418 is 81435916.

61953418 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 61355889 + 597529 = 7833^2 + 773^2 .

It is not an unprimeable number, because it can be changed into a prime (61953413) 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 as a sum of consecutive naturals, namely, 15488353 + ... + 15488356.

Almost surely, 2^61953418 is an apocalyptic number.

61953418 is a deficient number, since it is larger than the sum of its proper divisors (30976712).

61953418 is a wasteful number, since it uses less digits than its factorization.

61953418 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30976711.

The product of its digits is 25920, while the sum is 37.

The square root of 61953418 is about 7871.0493582495. The cubic root of 61953418 is about 395.6900143556.

The spelling of 61953418 in words is "sixty-one million, nine hundred fifty-three thousand, four hundred eighteen".