1918783948 has 24 divisors (see below), whose sum is σ = 3562876800. Its totient is φ = 901056768.

The previous prime is 1918783943. The next prime is 1918783949. The reversal of 1918783948 is 8493878191.

It is a junction number, because it is equal to n+sod(n) for n = 1918783892 and 1918783901.

It is not an unprimeable number, because it can be changed into a prime (1918783943) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3118 + ... + 62026.

It is an arithmetic number, because the mean of its divisors is an integer number (148453200).

Almost surely, 2^1918783948 is an apocalyptic number.

It is an amenable number.

1918783948 is a deficient number, since it is larger than the sum of its proper divisors (1644092852).

1918783948 is a wasteful number, since it uses less digits than its factorization.

1918783948 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59409 (or 59407 counting only the distinct ones).

The product of its digits is 3483648, while the sum is 58.

The square root of 1918783948 is about 43803.9261710637. The cubic root of 1918783948 is about 1242.6305472209.

The spelling of 1918783948 in words is "one billion, nine hundred eighteen million, seven hundred eighty-three thousand, nine hundred forty-eight".