919980784900 has 36 divisors (see below), whose sum is σ = 1996459913700. Its totient is φ = 367973584000.

The previous prime is 919980784861. The next prime is 919980784939. The reversal of 919980784900 is 9487089919.

It is an interprime number because it is at equal distance from previous prime (919980784861) and next prime (919980784939).

It can be written as a sum of positive squares in 6 ways, for example, as 183418619076 + 736562165824 = 428274^2 + 858232^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1831050 + ... + 2278750.

It is an arithmetic number, because the mean of its divisors is an integer number (55457219825).

Almost surely, 2^919980784900 is an apocalyptic number.

It is an amenable number.

919980784900 is an abundant number, since it is smaller than the sum of its proper divisors (1076479128800).

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

919980784900 is a wasteful number, since it uses less digits than its factorization.

919980784900 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 468264 (or 468257 counting only the distinct ones).

The product of its (nonzero) digits is 11757312, while the sum is 64.

The spelling of 919980784900 in words is "nine hundred nineteen billion, nine hundred eighty million, seven hundred eighty-four thousand, nine hundred".