1772842478 has 16 divisors (see below), whose sum is σ = 2913474096. Its totient is φ = 802376640.

The previous prime is 1772842427. The next prime is 1772842493. The reversal of 1772842478 is 8742482771.

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, 167801 + ... + 178052.

It is an arithmetic number, because the mean of its divisors is an integer number (182092131).

Almost surely, 2^1772842478 is an apocalyptic number.

1772842478 is a deficient number, since it is larger than the sum of its proper divisors (1140631618).

1772842478 is a wasteful number, since it uses less digits than its factorization.

1772842478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 346099.

The product of its digits is 1404928, while the sum is 50.

The square root of 1772842478 is about 42105.1360050054. The cubic root of 1772842478 is about 1210.2916852523.

It can be divided in two parts, 17728 and 42478, that added together give a palindrome (60206).

The spelling of 1772842478 in words is "one billion, seven hundred seventy-two million, eight hundred forty-two thousand, four hundred seventy-eight".