1893960945 has 24 divisors (see below), whose sum is σ = 3455649600. Its totient is φ = 956948256.

The previous prime is 1893960899. The next prime is 1893960949. The reversal of 1893960945 is 5490693981.

It is not a de Polignac number, because 1893960945 - 2⁸ = 1893960689 is a prime.

It is a super-2 number, since 2×1893960945² = 7174176122370586050, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1893960891 and 1893960900.

It is not an unprimeable number, because it can be changed into a prime (1893960949) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1106725 + ... + 1108434.

It is an arithmetic number, because the mean of its divisors is an integer number (143985400).

Almost surely, 2^1893960945 is an apocalyptic number.

1893960945 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1893960945 is a deficient number, since it is larger than the sum of its proper divisors (1561688655).

1893960945 is a wasteful number, since it uses less digits than its factorization.

1893960945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2215189 (or 2215186 counting only the distinct ones).

The product of its (nonzero) digits is 2099520, while the sum is 54.

The square root of 1893960945 is about 43519.6615910556. The cubic root of 1893960945 is about 1237.2487007321.

The spelling of 1893960945 in words is "one billion, eight hundred ninety-three million, nine hundred sixty thousand, nine hundred forty-five".