1601261357 has 16 divisors (see below), whose sum is σ = 1703393280. Its totient is φ = 1501969392.

The previous prime is 1601261329. The next prime is 1601261371. The reversal of 1601261357 is 7531621061.

It is a cyclic number.

It is not a de Polignac number, because 1601261357 - 2⁶ = 1601261293 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 (1601261327) 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 in 15 ways as a sum of consecutive naturals, for example, 659648 + ... + 662070.

It is an arithmetic number, because the mean of its divisors is an integer number (106462080).

Almost surely, 2^1601261357 is an apocalyptic number.

It is an amenable number.

1601261357 is a deficient number, since it is larger than the sum of its proper divisors (102131923).

1601261357 is a wasteful number, since it uses less digits than its factorization.

1601261357 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2992.

The product of its (nonzero) digits is 7560, while the sum is 32.

The square root of 1601261357 is about 40015.7638562604. The cubic root of 1601261357 is about 1169.9143670738.

The spelling of 1601261357 in words is "one billion, six hundred one million, two hundred sixty-one thousand, three hundred fifty-seven".