1672391532 has 48 divisors (see below), whose sum is σ = 4503889152. Its totient is φ = 473092800.

The previous prime is 1672391531. The next prime is 1672391537. The reversal of 1672391532 is 2351932761.

It is a happy number.

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (1672391531) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 90078 + ... + 107045.

It is an arithmetic number, because the mean of its divisors is an integer number (93831024).

Almost surely, 2^1672391532 is an apocalyptic number.

1672391532 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1672391532 is an abundant number, since it is smaller than the sum of its proper divisors (2831497620).

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

1672391532 is a wasteful number, since it uses less digits than its factorization.

1672391532 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 197238 (or 197236 counting only the distinct ones).

The product of its digits is 68040, while the sum is 39.

The square root of 1672391532 is about 40894.8839343016. The cubic root of 1672391532 is about 1186.9870658153.

The spelling of 1672391532 in words is "one billion, six hundred seventy-two million, three hundred ninety-one thousand, five hundred thirty-two".