1128377812 has 12 divisors (see below), whose sum is σ = 1977020640. Its totient is φ = 563514776.

The previous prime is 1128377807. The next prime is 1128377819. The reversal of 1128377812 is 2187738211.

It is a super-2 number, since 2×1128377812² = 2546472973227814688, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1128377819) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 164758 + ... + 171469.

It is an arithmetic number, because the mean of its divisors is an integer number (164751720).

Almost surely, 2^1128377812 is an apocalyptic number.

It is an amenable number.

1128377812 is a deficient number, since it is larger than the sum of its proper divisors (848642828).

1128377812 is a wasteful number, since it uses less digits than its factorization.

1128377812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 337070 (or 337068 counting only the distinct ones).

The product of its digits is 37632, while the sum is 40.

The square root of 1128377812 is about 33591.3353708959. The cubic root of 1128377812 is about 1041.0817799435.

The spelling of 1128377812 in words is "one billion, one hundred twenty-eight million, three hundred seventy-seven thousand, eight hundred twelve".