619981332 has 12 divisors (see below), whose sum is σ = 1446623136. Its totient is φ = 206660440.

The previous prime is 619981331. The next prime is 619981337. The reversal of 619981332 is 233189916.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (619981331) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25832544 + ... + 25832567.

It is an arithmetic number, because the mean of its divisors is an integer number (120551928).

Almost surely, 2^619981332 is an apocalyptic number.

It is an amenable number.

619981332 is an abundant number, since it is smaller than the sum of its proper divisors (826641804).

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

619981332 is a wasteful number, since it uses less digits than its factorization.

619981332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51665118 (or 51665116 counting only the distinct ones).

The product of its digits is 69984, while the sum is 42.

The square root of 619981332 is about 24899.4243306949. The cubic root of 619981332 is about 852.6933400492.

The spelling of 619981332 in words is "six hundred nineteen million, nine hundred eighty-one thousand, three hundred thirty-two".