1948777812 has 48 divisors (see below), whose sum is σ = 5127814720. Its totient is φ = 639894816.

The previous prime is 1948777783. The next prime is 1948777843. The reversal of 1948777812 is 2187778491.

1948777812 is a `hidden beast` number, since 19 + 487 + 77 + 81 + 2 = 666.

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

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, 127423 + ... + 141894.

Almost surely, 2^1948777812 is an apocalyptic number.

1948777812 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1948777812 is an abundant number, since it is smaller than the sum of its proper divisors (3179036908).

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

1948777812 is a wasteful number, since it uses less digits than its factorization.

1948777812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 269397 (or 269389 counting only the distinct ones).

The product of its digits is 1580544, while the sum is 54.

The square root of 1948777812 is about 44144.9636085477. The cubic root of 1948777812 is about 1249.0719109845.

The spelling of 1948777812 in words is "one billion, nine hundred forty-eight million, seven hundred seventy-seven thousand, eight hundred twelve".