1495163778 has 8 divisors (see below), whose sum is σ = 2990327568. Its totient is φ = 498387924.

The previous prime is 1495163749. The next prime is 1495163779. The reversal of 1495163778 is 8773615941.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

1495163778 is an admirable number.

It is a Smith number, since the sum of its digits (51) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a self number, because there is not a number n which added to its sum of digits gives 1495163778.

It is not an unprimeable number, because it can be changed into a prime (1495163779) 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, 124596976 + ... + 124596987.

It is an arithmetic number, because the mean of its divisors is an integer number (373790946).

Almost surely, 2^1495163778 is an apocalyptic number.

1495163778 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1495163778 is a wasteful number, since it uses less digits than its factorization.

1495163778 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 249193968.

The product of its digits is 1270080, while the sum is 51.

The square root of 1495163778 is about 38667.3476980255. The cubic root of 1495163778 is about 1143.4826753066.

It can be divided in two parts, 1495163 and 778, that added together give a palindrome (1495941).

The spelling of 1495163778 in words is "one billion, four hundred ninety-five million, one hundred sixty-three thousand, seven hundred seventy-eight".