1864749190 has 16 divisors (see below), whose sum is σ = 3357307440. Its totient is φ = 745731040.

The previous prime is 1864749179. The next prime is 1864749203. The reversal of 1864749190 is 919474681.

It is a super-2 number, since 2×1864749190² = 6954579083211312200, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31641 + ... + 68779.

It is an arithmetic number, because the mean of its divisors is an integer number (209831715).

Almost surely, 2^1864749190 is an apocalyptic number.

1864749190 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1864749190 is a deficient number, since it is larger than the sum of its proper divisors (1492558250).

1864749190 is a wasteful number, since it uses less digits than its factorization.

1864749190 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42167.

The product of its (nonzero) digits is 435456, while the sum is 49.

The square root of 1864749190 is about 43182.7418073471. The cubic root of 1864749190 is about 1230.8547587229.

The spelling of 1864749190 in words is "one billion, eight hundred sixty-four million, seven hundred forty-nine thousand, one hundred ninety".