1898878464 has 400 divisors, whose sum is σ = 6717950976. Its totient is φ = 522547200.

The previous prime is 1898878441. The next prime is 1898878481. The reversal of 1898878464 is 4648788981.

1898878464 is a `hidden beast` number, since 1 + 8 + 98 + 87 + 8 + 464 = 666.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 8999319 + ... + 8999529.

Almost surely, 2^1898878464 is an apocalyptic number.

1898878464 is a gapful number since it is divisible by the number (14) 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 1898878464, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3358975488).

1898878464 is an abundant number, since it is smaller than the sum of its proper divisors (4819072512).

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

1898878464 is an equidigital number, since it uses as much as digits as its factorization.

1898878464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 279 (or 254 counting only the distinct ones).

The product of its digits is 24772608, while the sum is 63.

The square root of 1898878464 is about 43576.1226361410. The cubic root of 1898878464 is about 1238.3185812706.

The spelling of 1898878464 in words is "one billion, eight hundred ninety-eight million, eight hundred seventy-eight thousand, four hundred sixty-four".