1601731427 has 16 divisors (see below), whose sum is σ = 1648860192. Its totient is φ = 1555507200.

The previous prime is 1601731423. The next prime is 1601731429. The reversal of 1601731427 is 7241371061.

It is a cyclic number.

It is not a de Polignac number, because 1601731427 - 2² = 1601731423 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1601731393 and 1601731402.

It is not an unprimeable number, because it can be changed into a prime (1601731423) 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, 1315523 + ... + 1316739.

It is an arithmetic number, because the mean of its divisors is an integer number (103053762).

Almost surely, 2^1601731427 is an apocalyptic number.

1601731427 is a deficient number, since it is larger than the sum of its proper divisors (47128765).

1601731427 is a wasteful number, since it uses less digits than its factorization.

1601731427 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1558.

The product of its (nonzero) digits is 7056, while the sum is 32.

The square root of 1601731427 is about 40021.6369855107. The cubic root of 1601731427 is about 1170.0288367987.

The spelling of 1601731427 in words is "one billion, six hundred one million, seven hundred thirty-one thousand, four hundred twenty-seven".