1860465990 has 16 divisors (see below), whose sum is σ = 4465118448. Its totient is φ = 496124256.

The previous prime is 1860465977. The next prime is 1860465991. The reversal of 1860465990 is 995640681.

It is a super-2 number, since 2×1860465990² = 6922667399893360200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1860465991) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31007737 + ... + 31007796.

It is an arithmetic number, because the mean of its divisors is an integer number (279069903).

Almost surely, 2^1860465990 is an apocalyptic number.

1860465990 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1860465990 is an abundant number, since it is smaller than the sum of its proper divisors (2604652458).

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

1860465990 is a wasteful number, since it uses less digits than its factorization.

1860465990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62015543.

The product of its (nonzero) digits is 466560, while the sum is 48.

The square root of 1860465990 is about 43133.1194095674. The cubic root of 1860465990 is about 1229.9116401593.

The spelling of 1860465990 in words is "one billion, eight hundred sixty million, four hundred sixty-five thousand, nine hundred ninety".