1373727261 has 8 divisors (see below), whose sum is σ = 1839635680. Its totient is φ = 911818512.

The previous prime is 1373727253. The next prime is 1373727281. The reversal of 1373727261 is 1627273731.

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

It is not a de Polignac number, because 1373727261 - 2³ = 1373727253 is a prime.

It is a super-2 number, since 2×1373727261² = 3774253175229124242, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1373727221) 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, 999115 + ... + 1000488.

It is an arithmetic number, because the mean of its divisors is an integer number (229954460).

Almost surely, 2^1373727261 is an apocalyptic number.

It is an amenable number.

1373727261 is a deficient number, since it is larger than the sum of its proper divisors (465908419).

1373727261 is a wasteful number, since it uses less digits than its factorization.

1373727261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1999835.

The product of its digits is 74088, while the sum is 39.

The square root of 1373727261 is about 37063.8268531462. The cubic root of 1373727261 is about 1111.6468428616.

The spelling of 1373727261 in words is "one billion, three hundred seventy-three million, seven hundred twenty-seven thousand, two hundred sixty-one".