1341779257 has 16 divisors (see below), whose sum is σ = 1664438272. Its totient is φ = 1053259200.

The previous prime is 1341779237. The next prime is 1341779269. The reversal of 1341779257 is 7529771431.

It is not a de Polignac number, because 1341779257 - 2²³ = 1333390649 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1341779207) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 46494 + ... + 69607.

It is an arithmetic number, because the mean of its divisors is an integer number (104027392).

Almost surely, 2^1341779257 is an apocalyptic number.

It is an amenable number.

1341779257 is a deficient number, since it is larger than the sum of its proper divisors (322659015).

1341779257 is a wasteful number, since it uses less digits than its factorization.

1341779257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 116248.

The product of its digits is 370440, while the sum is 46.

The square root of 1341779257 is about 36630.3051720839. The cubic root of 1341779257 is about 1102.9615119013.

The spelling of 1341779257 in words is "one billion, three hundred forty-one million, seven hundred seventy-nine thousand, two hundred fifty-seven".