1281150896 has 20 divisors (see below), whose sum is σ = 2492623200. Its totient is φ = 637893312.

The previous prime is 1281150887. The next prime is 1281150917. The reversal of 1281150896 is 6980511821.

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, 163691 + ... + 171338.

It is an arithmetic number, because the mean of its divisors is an integer number (124631160).

Almost surely, 2^1281150896 is an apocalyptic number.

1281150896 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1281150896 is a deficient number, since it is larger than the sum of its proper divisors (1211472304).

1281150896 is a wasteful number, since it uses less digits than its factorization.

1281150896 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 335276 (or 335270 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 41.

The square root of 1281150896 is about 35793.1682866996. The cubic root of 1281150896 is about 1086.0923671108.

The spelling of 1281150896 in words is "one billion, two hundred eighty-one million, one hundred fifty thousand, eight hundred ninety-six".