1994137272 has 32 divisors (see below), whose sum is σ = 5539270800. Its totient is φ = 664712352.

The previous prime is 1994137261. The next prime is 1994137309. The reversal of 1994137272 is 2727314991.

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, 4615843 + ... + 4616274.

Almost surely, 2^1994137272 is an apocalyptic number.

1994137272 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1994137272 is an abundant number, since it is smaller than the sum of its proper divisors (3545133528).

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

1994137272 is a wasteful number, since it uses less digits than its factorization.

1994137272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9232132 (or 9232122 counting only the distinct ones).

The product of its digits is 190512, while the sum is 45.

The square root of 1994137272 is about 44655.7641520107. The cubic root of 1994137272 is about 1258.6887492659.

The spelling of 1994137272 in words is "one billion, nine hundred ninety-four million, one hundred thirty-seven thousand, two hundred seventy-two".