1385661294 has 24 divisors (see below), whose sum is σ = 3014837280. Its totient is φ = 459953088.

The previous prime is 1385661287. The next prime is 1385661323. The reversal of 1385661294 is 4921665831.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 156747 + ... + 165350.

It is an arithmetic number, because the mean of its divisors is an integer number (125618220).

Almost surely, 2^1385661294 is an apocalyptic number.

1385661294 is an abundant number, since it is smaller than the sum of its proper divisors (1629175986).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1385661294 is a wasteful number, since it uses less digits than its factorization.

1385661294 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 322344 (or 322341 counting only the distinct ones).

The product of its digits is 311040, while the sum is 45.

The square root of 1385661294 is about 37224.4717088101. The cubic root of 1385661294 is about 1114.8566497793.

The spelling of 1385661294 in words is "one billion, three hundred eighty-five million, six hundred sixty-one thousand, two hundred ninety-four".