618955950 has 24 divisors (see below), whose sum is σ = 1535011128. Its totient is φ = 165054880.

The previous prime is 618955949. The next prime is 618955957. The reversal of 618955950 is 59559816.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 618955950.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (618955957) 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 11 ways as a sum of consecutive naturals, for example, 2063037 + ... + 2063336.

It is an arithmetic number, because the mean of its divisors is an integer number (63958797).

Almost surely, 2^618955950 is an apocalyptic number.

618955950 is an abundant number, since it is smaller than the sum of its proper divisors (916055178).

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

618955950 is a wasteful number, since it uses less digits than its factorization.

618955950 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4126388 (or 4126383 counting only the distinct ones).

The product of its (nonzero) digits is 486000, while the sum is 48.

The square root of 618955950 is about 24878.8253340064. The cubic root of 618955950 is about 852.2229931641. Note that the first 3 decimals are identical.

The spelling of 618955950 in words is "six hundred eighteen million, nine hundred fifty-five thousand, nine hundred fifty".