1601972347 has 2 divisors, whose sum is σ = 1601972348. Its totient is φ = 1601972346.

The previous prime is 1601972297. The next prime is 1601972381. The reversal of 1601972347 is 7432791061.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1601972347 - 2¹⁵ = 1601939579 is a prime.

It is a super-3 number, since 3×1601972347³ (a number of 29 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (1601972947) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 800986173 + 800986174.

It is an arithmetic number, because the mean of its divisors is an integer number (800986174).

Almost surely, 2^1601972347 is an apocalyptic number.

1601972347 is a deficient number, since it is larger than the sum of its proper divisors (1).

1601972347 is an equidigital number, since it uses as much as digits as its factorization.

1601972347 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 63504, while the sum is 40.

The square root of 1601972347 is about 40024.6467442250. The cubic root of 1601972347 is about 1170.0874960743.

The spelling of 1601972347 in words is "one billion, six hundred one million, nine hundred seventy-two thousand, three hundred forty-seven".