1601129397 has 8 divisors (see below), whose sum is σ = 2439816256. Its totient is φ = 914931072.

The previous prime is 1601129389. The next prime is 1601129399. The reversal of 1601129397 is 7939211061.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1601129397 - 2³ = 1601129389 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1601129399) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 38122108 + ... + 38122149.

It is an arithmetic number, because the mean of its divisors is an integer number (304977032).

Almost surely, 2^1601129397 is an apocalyptic number.

It is an amenable number.

1601129397 is a deficient number, since it is larger than the sum of its proper divisors (838686859).

1601129397 is an equidigital number, since it uses as much as digits as its factorization.

1601129397 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76244267.

The product of its (nonzero) digits is 20412, while the sum is 39.

The square root of 1601129397 is about 40014.1149720945. The cubic root of 1601129397 is about 1169.8822286307.

The spelling of 1601129397 in words is "one billion, six hundred one million, one hundred twenty-nine thousand, three hundred ninety-seven".