1364271721 has 8 divisors (see below), whose sum is σ = 1377984960. Its totient is φ = 1350576528.

The previous prime is 1364271677. The next prime is 1364271731. The reversal of 1364271721 is 1271724631.

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 1364271721 - 2¹³ = 1364263529 is a prime.

It is a super-2 number, since 2×1364271721² = 3722474657440603682, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1364271731) 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, 187860 + ... + 194986.

It is an arithmetic number, because the mean of its divisors is an integer number (172248120).

Almost surely, 2^1364271721 is an apocalyptic number.

It is an amenable number.

1364271721 is a deficient number, since it is larger than the sum of its proper divisors (13713239).

1364271721 is a wasteful number, since it uses less digits than its factorization.

1364271721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9023.

The product of its digits is 14112, while the sum is 34.

The square root of 1364271721 is about 36936.0490713341. The cubic root of 1364271721 is about 1109.0904328117.

The spelling of 1364271721 in words is "one billion, three hundred sixty-four million, two hundred seventy-one thousand, seven hundred twenty-one".