1375616249 has 8 divisors (see below), whose sum is σ = 1604217600. Its totient is φ = 1179099348.

The previous prime is 1375616243. The next prime is 1375616273. The reversal of 1375616249 is 9426165731.

It is not a de Polignac number, because 1375616249 - 2⁴ = 1375616233 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1375616243) 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, 2004929 + ... + 2005614.

It is an arithmetic number, because the mean of its divisors is an integer number (200527200).

Almost surely, 2^1375616249 is an apocalyptic number.

It is an amenable number.

1375616249 is a deficient number, since it is larger than the sum of its proper divisors (228601351).

1375616249 is an frugal number, since it uses more digits than its factorization.

1375616249 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4010564 (or 4010550 counting only the distinct ones).

The product of its digits is 272160, while the sum is 44.

The square root of 1375616249 is about 37089.3010044676. The cubic root of 1375616249 is about 1112.1561447768.

The spelling of 1375616249 in words is "one billion, three hundred seventy-five million, six hundred sixteen thousand, two hundred forty-nine".