1245578378 has 8 divisors (see below), whose sum is σ = 2038219200. Its totient is φ = 566171980.

The previous prime is 1245578339. The next prime is 1245578393. The reversal of 1245578378 is 8738755421.

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

It is a super-2 number, since 2×1245578378² = 3102930991482221768, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28308578 + ... + 28308621.

It is an arithmetic number, because the mean of its divisors is an integer number (254777400).

Almost surely, 2^1245578378 is an apocalyptic number.

1245578378 is a deficient number, since it is larger than the sum of its proper divisors (792640822).

1245578378 is a wasteful number, since it uses less digits than its factorization.

1245578378 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56617212.

The product of its digits is 1881600, while the sum is 50.

The square root of 1245578378 is about 35292.7524854608. The cubic root of 1245578378 is about 1075.9456983279.

The spelling of 1245578378 in words is "one billion, two hundred forty-five million, five hundred seventy-eight thousand, three hundred seventy-eight".