1849421764 has 12 divisors (see below), whose sum is σ = 3323961004. Its totient is φ = 899718624.

The previous prime is 1849421759. The next prime is 1849421767. The reversal of 1849421764 is 4671249481.

It can be written as a sum of positive squares in 2 ways, for example, as 1506060864 + 343360900 = 38808^2 + 18530^2 .

It is a super-2 number, since 2×1849421764² = 6840721722313743392, which contains 22 as substring.

It is a hoax number, since the sum of its digits (46) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (1849421767) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6247899 + ... + 6248194.

Almost surely, 2^1849421764 is an apocalyptic number.

It is an amenable number.

1849421764 is a deficient number, since it is larger than the sum of its proper divisors (1474539240).

1849421764 is a wasteful number, since it uses less digits than its factorization.

1849421764 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12496134 (or 12496132 counting only the distinct ones).

The product of its digits is 387072, while the sum is 46.

The square root of 1849421764 is about 43004.9039529215. The cubic root of 1849421764 is about 1227.4731132055.

The spelling of 1849421764 in words is "one billion, eight hundred forty-nine million, four hundred twenty-one thousand, seven hundred sixty-four".