1881451962 has 80 divisors (see below), whose sum is σ = 4573982952. Its totient is φ = 574594560.

The previous prime is 1881451927. The next prime is 1881451967. The reversal of 1881451962 is 2691541881.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 1729644921 + 151807041 = 41589^2 + 12321^2 .

It is a super-2 number, since 2×1881451962² = 7079722970627298888, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1881451967) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 285262 + ... + 291782.

Almost surely, 2^1881451962 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1881451962, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2286991476).

1881451962 is an abundant number, since it is smaller than the sum of its proper divisors (2692530990).

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

1881451962 is a wasteful number, since it uses less digits than its factorization.

1881451962 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6685 (or 6676 counting only the distinct ones).

The product of its digits is 138240, while the sum is 45.

The square root of 1881451962 is about 43375.7070489923. The cubic root of 1881451962 is about 1234.5188096270.

The spelling of 1881451962 in words is "one billion, eight hundred eighty-one million, four hundred fifty-one thousand, nine hundred sixty-two".