1249233378 has 32 divisors (see below), whose sum is σ = 2535694656. Its totient is φ = 410220288.

The previous prime is 1249233371. The next prime is 1249233383. The reversal of 1249233378 is 8733329421.

It is not an unprimeable number, because it can be changed into a prime (1249233371) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 711750 + ... + 713502.

It is an arithmetic number, because the mean of its divisors is an integer number (79240458).

Almost surely, 2^1249233378 is an apocalyptic number.

1249233378 is an abundant number, since it is smaller than the sum of its proper divisors (1286461278).

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

1249233378 is a wasteful number, since it uses less digits than its factorization.

1249233378 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3458.

The product of its digits is 217728, while the sum is 42.

The square root of 1249233378 is about 35344.4957242284. The cubic root of 1249233378 is about 1076.9970817100.

The spelling of 1249233378 in words is "one billion, two hundred forty-nine million, two hundred thirty-three thousand, three hundred seventy-eight".