1601701381 has 8 divisors (see below), whose sum is σ = 1852570944. Its totient is φ = 1356345600.

The previous prime is 1601701373. The next prime is 1601701433. The reversal of 1601701381 is 1831071061.

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

It is a cyclic number.

It is not a de Polignac number, because 1601701381 - 2³ = 1601701373 is a prime.

It is a super-2 number, since 2×1601701381² = 5130894627794614322, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1601701681) 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, 1377820 + ... + 1378981.

It is an arithmetic number, because the mean of its divisors is an integer number (231571368).

Almost surely, 2^1601701381 is an apocalyptic number.

It is an amenable number.

1601701381 is a deficient number, since it is larger than the sum of its proper divisors (250869563).

1601701381 is an equidigital number, since it uses as much as digits as its factorization.

1601701381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2756891.

The product of its (nonzero) digits is 1008, while the sum is 28.

The square root of 1601701381 is about 40021.2616117983. The cubic root of 1601701381 is about 1170.0215207769.

The spelling of 1601701381 in words is "one billion, six hundred one million, seven hundred one thousand, three hundred eighty-one".