1898279056 has 80 divisors (see below), whose sum is σ = 4089738240. Its totient is φ = 849467520.

The previous prime is 1898279051. The next prime is 1898279059. The reversal of 1898279056 is 6509728981.

It is a super-2 number, since 2×1898279056² = 7206926748896502272, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1898278988 and 1898279006.

It is not an unprimeable number, because it can be changed into a prime (1898279051) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 578701 + ... + 581971.

It is an arithmetic number, because the mean of its divisors is an integer number (51121728).

Almost surely, 2^1898279056 is an apocalyptic number.

1898279056 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1898279056, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2044869120).

1898279056 is an abundant number, since it is smaller than the sum of its proper divisors (2191459184).

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

1898279056 is a wasteful number, since it uses less digits than its factorization.

1898279056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3404 (or 3398 counting only the distinct ones).

The product of its (nonzero) digits is 2177280, while the sum is 55.

The square root of 1898279056 is about 43569.2443817884. The cubic root of 1898279056 is about 1238.1882699328.

The spelling of 1898279056 in words is "one billion, eight hundred ninety-eight million, two hundred seventy-nine thousand, fifty-six".