921895545 has 32 divisors (see below), whose sum is σ = 1562176512. Its totient is φ = 463269312.

The previous prime is 921895543. The next prime is 921895547. The reversal of 921895545 is 545598129.

It is an interprime number because it is at equal distance from previous prime (921895543) and next prime (921895547).

It is not a de Polignac number, because 921895545 - 2¹ = 921895543 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 921895494 and 921895503.

It is not an unprimeable number, because it can be changed into a prime (921895543) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3174 + ... + 43056.

It is an arithmetic number, because the mean of its divisors is an integer number (48818016).

Almost surely, 2^921895545 is an apocalyptic number.

It is an amenable number.

921895545 is a deficient number, since it is larger than the sum of its proper divisors (640280967).

921895545 is a wasteful number, since it uses less digits than its factorization.

921895545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39981.

The product of its digits is 648000, while the sum is 48.

The square root of 921895545 is about 30362.7328315486. The cubic root of 921895545 is about 973.2563338908.

The spelling of 921895545 in words is "nine hundred twenty-one million, eight hundred ninety-five thousand, five hundred forty-five".