2145895078 has 16 divisors (see below), whose sum is σ = 3474614880. Its totient is φ = 990907456.

The previous prime is 2145895069. The next prime is 2145895097. The reversal of 2145895078 is 8705985412.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 802975 + ... + 805642.

It is an arithmetic number, because the mean of its divisors is an integer number (217163430).

Almost surely, 2^2145895078 is an apocalyptic number.

2145895078 is a deficient number, since it is larger than the sum of its proper divisors (1328719802).

2145895078 is a wasteful number, since it uses less digits than its factorization.

2145895078 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1608671.

The product of its (nonzero) digits is 806400, while the sum is 49.

The square root of 2145895078 is about 46323.8068167978. The cubic root of 2145895078 is about 1289.8409510859.

The spelling of 2145895078 in words is "two billion, one hundred forty-five million, eight hundred ninety-five thousand, seventy-eight".