1881266972 has 24 divisors (see below), whose sum is σ = 3547110000. Its totient is φ = 867874176.

The previous prime is 1881266957. The next prime is 1881266983. The reversal of 1881266972 is 2796621881.

It is a self number, because there is not a number n which added to its sum of digits gives 1881266972.

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, 124904 + ... + 139152.

It is an arithmetic number, because the mean of its divisors is an integer number (147796250).

Almost surely, 2^1881266972 is an apocalyptic number.

It is an amenable number.

1881266972 is a deficient number, since it is larger than the sum of its proper divisors (1665843028).

1881266972 is a wasteful number, since it uses less digits than its factorization.

1881266972 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16805 (or 16803 counting only the distinct ones).

The product of its digits is 580608, while the sum is 50.

The square root of 1881266972 is about 43373.5745817658. The cubic root of 1881266972 is about 1234.4783477702.

The spelling of 1881266972 in words is "one billion, eight hundred eighty-one million, two hundred sixty-six thousand, nine hundred seventy-two".