1381848261 has 8 divisors (see below), whose sum is σ = 1844920704. Its totient is φ = 920004000.

The previous prime is 1381848197. The next prime is 1381848337. The reversal of 1381848261 is 1628481831.

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

It is not a de Polignac number, because 1381848261 - 2⁶ = 1381848197 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1331848261) 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, 304416 + ... + 308921.

It is an arithmetic number, because the mean of its divisors is an integer number (230615088).

Almost surely, 2^1381848261 is an apocalyptic number.

It is an amenable number.

1381848261 is a deficient number, since it is larger than the sum of its proper divisors (463072443).

1381848261 is an equidigital number, since it uses as much as digits as its factorization.

1381848261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 614091.

The product of its digits is 73728, while the sum is 42.

The square root of 1381848261 is about 37173.2196749219. The cubic root of 1381848261 is about 1113.8330974766.

The spelling of 1381848261 in words is "one billion, three hundred eighty-one million, eight hundred forty-eight thousand, two hundred sixty-one".