1295695778 has 16 divisors (see below), whose sum is σ = 2160566016. Its totient is φ = 578722320.

The previous prime is 1295695763. The next prime is 1295695801. The reversal of 1295695778 is 8775965921.

It is a Curzon 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, 802976 + ... + 804587.

It is an arithmetic number, because the mean of its divisors is an integer number (135035376).

Almost surely, 2^1295695778 is an apocalyptic number.

1295695778 is a deficient number, since it is larger than the sum of its proper divisors (864870238).

1295695778 is a wasteful number, since it uses less digits than its factorization.

1295695778 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1607609.

The product of its digits is 9525600, while the sum is 59.

The square root of 1295695778 is about 35995.7744464541. The cubic root of 1295695778 is about 1090.1870391373.

The spelling of 1295695778 in words is "one billion, two hundred ninety-five million, six hundred ninety-five thousand, seven hundred seventy-eight".