1253367378 has 64 divisors (see below), whose sum is σ = 2889325440. Its totient is φ = 402408000.

The previous prime is 1253367343. The next prime is 1253367407. The reversal of 1253367378 is 8737633521.

1253367378 is a `hidden beast` number, since 1 + 253 + 367 + 37 + 8 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 198693 + ... + 204903.

It is an arithmetic number, because the mean of its divisors is an integer number (45145710).

Almost surely, 2^1253367378 is an apocalyptic number.

1253367378 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1253367378, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1444662720).

1253367378 is an abundant number, since it is smaller than the sum of its proper divisors (1635958062).

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

1253367378 is a wasteful number, since it uses less digits than its factorization.

1253367378 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6360 (or 6354 counting only the distinct ones).

The product of its digits is 635040, while the sum is 45.

The square root of 1253367378 is about 35402.9289466281. The cubic root of 1253367378 is about 1078.1837838345.

The spelling of 1253367378 in words is "one billion, two hundred fifty-three million, three hundred sixty-seven thousand, three hundred seventy-eight".