919705989461 has 6 divisors (see below), whose sum is σ = 1069862069430. Its totient is φ = 788319419496.

The previous prime is 919705989437. The next prime is 919705989479. The reversal of 919705989461 is 164989507919.

It can be written as a sum of positive squares in only one way, i.e., 905904204100 + 13801785361 = 951790^2 + 117481^2 .

It is a de Polignac number, because none of the positive numbers 2^k-919705989461 is a prime.

It is a super-3 number, since 3×919705989461³ (a number of 37 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 919705989391 and 919705989400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (919705989401) 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, 9384754946 + ... + 9384755043.

It is an arithmetic number, because the mean of its divisors is an integer number (178310344905).

Almost surely, 2^919705989461 is an apocalyptic number.

It is an amenable number.

919705989461 is a deficient number, since it is larger than the sum of its proper divisors (150156079969).

919705989461 is a wasteful number, since it uses less digits than its factorization.

919705989461 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18769510003 (or 18769509996 counting only the distinct ones).

The product of its (nonzero) digits is 44089920, while the sum is 68.

The spelling of 919705989461 in words is "nine hundred nineteen billion, seven hundred five million, nine hundred eighty-nine thousand, four hundred sixty-one".