1301491972 has 36 divisors (see below), whose sum is σ = 2584277248. Its totient is φ = 572497200.

The previous prime is 1301491931. The next prime is 1301491991. The reversal of 1301491972 is 2791941031.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 28368 + ... + 58375.

Almost surely, 2^1301491972 is an apocalyptic number.

It is an amenable number.

1301491972 is a deficient number, since it is larger than the sum of its proper divisors (1282785276).

1301491972 is a wasteful number, since it uses less digits than its factorization.

1301491972 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86800 (or 86787 counting only the distinct ones).

The product of its (nonzero) digits is 13608, while the sum is 37.

The square root of 1301491972 is about 36076.1967507663. The cubic root of 1301491972 is about 1091.8102433410.

It can be divided in two parts, 130 and 1491972, that multiplied together give a triangular number (193956360 = T₁₉₆₉₅).

The spelling of 1301491972 in words is "one billion, three hundred one million, four hundred ninety-one thousand, nine hundred seventy-two".