1899749376 has 280 divisors, whose sum is σ = 6502085040. Its totient is φ = 541458432.

The previous prime is 1899749297. The next prime is 1899749399. The reversal of 1899749376 is 6739479981.

It is a super-2 number, since 2×1899749376² = 7218095383224778752, which contains 22 as substring.

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 19 ways as a sum of consecutive naturals, for example, 4644660 + ... + 4645068.

Almost surely, 2^1899749376 is an apocalyptic number.

1899749376 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 1899749376, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3251042520).

1899749376 is an abundant number, since it is smaller than the sum of its proper divisors (4602335664).

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

1899749376 is an frugal number, since it uses more digits than its factorization.

1899749376 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 454 (or 421 counting only the distinct ones).

The product of its digits is 20575296, while the sum is 63.

The square root of 1899749376 is about 43586.1144861526. The cubic root of 1899749376 is about 1238.5078687363.

The spelling of 1899749376 in words is "one billion, eight hundred ninety-nine million, seven hundred forty-nine thousand, three hundred seventy-six".