1894748945 has 16 divisors (see below), whose sum is σ = 2339276160. Its totient is φ = 1472701824.

The previous prime is 1894748939. The next prime is 1894748953. The reversal of 1894748945 is 5498474981.

It is a cyclic number.

It is not a de Polignac number, because 1894748945 - 2⁶ = 1894748881 is a prime.

It is a super-2 number, since 2×1894748945² = 7180147129157226050, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14285 + ... + 63194.

It is an arithmetic number, because the mean of its divisors is an integer number (146204760).

Almost surely, 2^1894748945 is an apocalyptic number.

It is an amenable number.

1894748945 is a deficient number, since it is larger than the sum of its proper divisors (444527215).

1894748945 is an equidigital number, since it uses as much as digits as its factorization.

1894748945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77624.

The product of its digits is 11612160, while the sum is 59.

The square root of 1894748945 is about 43528.7140287879. The cubic root of 1894748945 is about 1237.4202665358.

The spelling of 1894748945 in words is "one billion, eight hundred ninety-four million, seven hundred forty-eight thousand, nine hundred forty-five".