919246945 has 4 divisors (see below), whose sum is σ = 1103096340. Its totient is φ = 735397552.

The previous prime is 919246943. The next prime is 919246949. The reversal of 919246945 is 549642919.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 333026001 + 586220944 = 18249^2 + 24212^2 .

It is a cyclic number.

It is not a de Polignac number, because 919246945 - 2¹ = 919246943 is a prime.

It is not an unprimeable number, because it can be changed into a prime (919246943) 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, 91924690 + ... + 91924699.

It is an arithmetic number, because the mean of its divisors is an integer number (275774085).

Almost surely, 2^919246945 is an apocalyptic number.

It is an amenable number.

919246945 is a deficient number, since it is larger than the sum of its proper divisors (183849395).

919246945 is a wasteful number, since it uses less digits than its factorization.

919246945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 183849394.

The product of its digits is 699840, while the sum is 49.

The square root of 919246945 is about 30319.0854908257. The cubic root of 919246945 is about 972.3233867966.

The spelling of 919246945 in words is "nine hundred nineteen million, two hundred forty-six thousand, nine hundred forty-five".