1899328464 has 240 divisors, whose sum is σ = 6152939520. Its totient is φ = 540898560.

The previous prime is 1899328439. The next prime is 1899328481. The reversal of 1899328464 is 4648239981.

It is a super-2 number, since 2×1899328464² = 7214897228321198592, which contains 22 as substring.

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

It is a self number, because there is not a number n which added to its sum of digits gives 1899328464.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 6711267 + ... + 6711549.

It is an arithmetic number, because the mean of its divisors is an integer number (25637248).

Almost surely, 2^1899328464 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1899328464, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3076469760).

1899328464 is an abundant number, since it is smaller than the sum of its proper divisors (4253611056).

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

1899328464 is a wasteful number, since it uses less digits than its factorization.

1899328464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 550 (or 541 counting only the distinct ones).

The product of its digits is 2985984, while the sum is 54.

The square root of 1899328464 is about 43581.2857084322. The cubic root of 1899328464 is about 1238.4163932790.

The spelling of 1899328464 in words is "one billion, eight hundred ninety-nine million, three hundred twenty-eight thousand, four hundred sixty-four".