61918950 has 24 divisors (see below), whose sum is σ = 153559368. Its totient is φ = 16511680.

The previous prime is 61918943. The next prime is 61918951. The reversal of 61918950 is 5981916.

It is a junction number, because it is equal to n+sod(n) for n = 61918899 and 61918908.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61918951) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 206247 + ... + 206546.

It is an arithmetic number, because the mean of its divisors is an integer number (6398307).

Almost surely, 2^61918950 is an apocalyptic number.

61918950 is an abundant number, since it is smaller than the sum of its proper divisors (91640418).

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

61918950 is a wasteful number, since it uses less digits than its factorization.

61918950 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 412808 (or 412803 counting only the distinct ones).

The product of its (nonzero) digits is 19440, while the sum is 39.

The square root of 61918950 is about 7868.8595107550. The cubic root of 61918950 is about 395.6166195700.

The spelling of 61918950 in words is "sixty-one million, nine hundred eighteen thousand, nine hundred fifty".