1378741149 has 8 divisors (see below), whose sum is σ = 2042579520. Its totient is φ = 919160748.

The previous prime is 1378741127. The next prime is 1378741181. The reversal of 1378741149 is 9411478731.

It is a de Polignac number, because none of the positive numbers 2^k-1378741149 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1378741549) 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, 25532217 + ... + 25532270.

It is an arithmetic number, because the mean of its divisors is an integer number (255322440).

Almost surely, 2^1378741149 is an apocalyptic number.

It is an amenable number.

1378741149 is a deficient number, since it is larger than the sum of its proper divisors (663838371).

1378741149 is an equidigital number, since it uses as much as digits as its factorization.

1378741149 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51064496 (or 51064490 counting only the distinct ones).

The product of its digits is 169344, while the sum is 45.

The square root of 1378741149 is about 37131.4038113293. The cubic root of 1378741149 is about 1112.9976460453.

The spelling of 1378741149 in words is "one billion, three hundred seventy-eight million, seven hundred forty-one thousand, one hundred forty-nine".