1618880950 has 12 divisors (see below), whose sum is σ = 3011118660. Its totient is φ = 647552360.

The previous prime is 1618880929. The next prime is 1618880951. The reversal of 1618880950 is 590888161.

It is a self number, because there is not a number n which added to its sum of digits gives 1618880950.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1618880951) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 16188760 + ... + 16188859.

It is an arithmetic number, because the mean of its divisors is an integer number (250926555).

Almost surely, 2^1618880950 is an apocalyptic number.

1618880950 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1618880950 is a deficient number, since it is larger than the sum of its proper divisors (1392237710).

1618880950 is a wasteful number, since it uses less digits than its factorization.

1618880950 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32377631 (or 32377626 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 46.

The square root of 1618880950 is about 40235.3196830844. The cubic root of 1618880950 is about 1174.1898021184.

The spelling of 1618880950 in words is "one billion, six hundred eighteen million, eight hundred eighty thousand, nine hundred fifty".