2145431810 has 16 divisors (see below), whose sum is σ = 3862311552. Its totient is φ = 858054000.

The previous prime is 2145431801. The next prime is 2145431819. The reversal of 2145431810 is 181345412.

It is an interprime number because it is at equal distance from previous prime (2145431801) and next prime (2145431819).

It is a super-2 number, since 2×2145431810² = 9205755302719752200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2145431819) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 115895 + ... + 133125.

It is an arithmetic number, because the mean of its divisors is an integer number (241394472).

Almost surely, 2^2145431810 is an apocalyptic number.

2145431810 is a deficient number, since it is larger than the sum of its proper divisors (1716879742).

2145431810 is a wasteful number, since it uses less digits than its factorization.

2145431810 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29689.

The product of its (nonzero) digits is 3840, while the sum is 29.

The square root of 2145431810 is about 46318.8062238223. The cubic root of 2145431810 is about 1289.7481250124.

The spelling of 2145431810 in words is "two billion, one hundred forty-five million, four hundred thirty-one thousand, eight hundred ten".