1866764952 has 96 divisors (see below), whose sum is σ = 5510559600. Its totient is φ = 567445248.

The previous prime is 1866764947. The next prime is 1866764971. The reversal of 1866764952 is 2594676681.

1866764952 is a `hidden beast` number, since 1 + 86 + 6 + 76 + 495 + 2 = 666.

It is a super-2 number, since 2×1866764952² = 6969622772031124608, 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 23 ways as a sum of consecutive naturals, for example, 65674 + ... + 89702.

Almost surely, 2^1866764952 is an apocalyptic number.

1866764952 is a gapful number since it is divisible by the number (12) 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 1866764952, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2755279800).

1866764952 is an abundant number, since it is smaller than the sum of its proper divisors (3643794648).

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

1866764952 is a wasteful number, since it uses less digits than its factorization.

1866764952 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24137 (or 24130 counting only the distinct ones).

The product of its digits is 4354560, while the sum is 54.

The square root of 1866764952 is about 43206.0754061278. The cubic root of 1866764952 is about 1231.2981099945.

The spelling of 1866764952 in words is "one billion, eight hundred sixty-six million, seven hundred sixty-four thousand, nine hundred fifty-two".