919954955009 has 4 divisors (see below), whose sum is σ = 920453037504. Its totient is φ = 919456872516.

The previous prime is 919954954991. The next prime is 919954955027. The reversal of 919954955009 is 900559459919.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (919954954991) and next prime (919954955027).

It is a cyclic number.

It is not a de Polignac number, because 919954955009 - 2²⁰ = 919953906433 is a prime.

It is a super-2 number, since 2×919954955009² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (919954955099) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 249038477 + ... + 249042170.

It is an arithmetic number, because the mean of its divisors is an integer number (230113259376).

Almost surely, 2^919954955009 is an apocalyptic number.

It is an amenable number.

919954955009 is a deficient number, since it is larger than the sum of its proper divisors (498082495).

919954955009 is a wasteful number, since it uses less digits than its factorization.

919954955009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 498082494.

The product of its (nonzero) digits is 29524500, while the sum is 65.

The spelling of 919954955009 in words is "nine hundred nineteen billion, nine hundred fifty-four million, nine hundred fifty-five thousand, nine".