1896945231 has 4 divisors (see below), whose sum is σ = 2529260312. Its totient is φ = 1264630152.

The previous prime is 1896945181. The next prime is 1896945257. The reversal of 1896945231 is 1325496981.

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

It is not a de Polignac number, because 1896945231 - 2⁷ = 1896945103 is a prime.

It is a super-2 number, since 2×1896945231² = 7196802418827286722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1896945131) 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, 316157536 + ... + 316157541.

It is an arithmetic number, because the mean of its divisors is an integer number (632315078).

Almost surely, 2^1896945231 is an apocalyptic number.

1896945231 is a deficient number, since it is larger than the sum of its proper divisors (632315081).

1896945231 is an equidigital number, since it uses as much as digits as its factorization.

1896945231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 632315080.

The product of its digits is 466560, while the sum is 48.

The square root of 1896945231 is about 43553.9347361407. The cubic root of 1896945231 is about 1237.8981978225.

The spelling of 1896945231 in words is "one billion, eight hundred ninety-six million, nine hundred forty-five thousand, two hundred thirty-one".