1861730952 has 64 divisors (see below), whose sum is σ = 4975205760. Its totient is φ = 579110400.

The previous prime is 1861730933. The next prime is 1861730971. The reversal of 1861730952 is 2590371681.

It is an interprime number because it is at equal distance from previous prime (1861730933) and next prime (1861730971).

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 18499 + ... + 63762.

It is an arithmetic number, because the mean of its divisors is an integer number (77737590).

Almost surely, 2^1861730952 is an apocalyptic number.

1861730952 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1861730952 is an abundant number, since it is smaller than the sum of its proper divisors (3113474808).

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

1861730952 is a wasteful number, since it uses less digits than its factorization.

1861730952 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82334 (or 82330 counting only the distinct ones).

The product of its (nonzero) digits is 90720, while the sum is 42.

The square root of 1861730952 is about 43147.7803832364. The cubic root of 1861730952 is about 1230.1903228526.

The spelling of 1861730952 in words is "one billion, eight hundred sixty-one million, seven hundred thirty thousand, nine hundred fifty-two".