1997009232 has 20 divisors (see below), whose sum is σ = 5158940640. Its totient is φ = 665669728.

The previous prime is 1997009197. The next prime is 1997009237. The reversal of 1997009232 is 2329007991.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1997009237) 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, 20802132 + ... + 20802227.

It is an arithmetic number, because the mean of its divisors is an integer number (257947032).

Almost surely, 2^1997009232 is an apocalyptic number.

1997009232 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1997009232 is an abundant number, since it is smaller than the sum of its proper divisors (3161931408).

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

1997009232 is a wasteful number, since it uses less digits than its factorization.

1997009232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41604370 (or 41604364 counting only the distinct ones).

The product of its (nonzero) digits is 61236, while the sum is 42.

The square root of 1997009232 is about 44687.9092372870. The cubic root of 1997009232 is about 1259.2927146635.

The spelling of 1997009232 in words is "one billion, nine hundred ninety-seven million, nine thousand, two hundred thirty-two".