1955778124 has 48 divisors (see below), whose sum is σ = 3674807136. Its totient is φ = 907545600.

The previous prime is 1955778109. The next prime is 1955778133. The reversal of 1955778124 is 4218775591.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1611742 + ... + 1612954.

It is an arithmetic number, because the mean of its divisors is an integer number (76558482).

Almost surely, 2^1955778124 is an apocalyptic number.

It is an amenable number.

1955778124 is a deficient number, since it is larger than the sum of its proper divisors (1719029012).

1955778124 is a wasteful number, since it uses less digits than its factorization.

1955778124 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1546 (or 1544 counting only the distinct ones).

The product of its digits is 705600, while the sum is 49.

The square root of 1955778124 is about 44224.1803089667. The cubic root of 1955778124 is about 1250.5657436953.

The spelling of 1955778124 in words is "one billion, nine hundred fifty-five million, seven hundred seventy-eight thousand, one hundred twenty-four".