1128902978 has 16 divisors (see below), whose sum is σ = 1935881664. Its totient is φ = 483660720.

The previous prime is 1128902963. The next prime is 1128903019. The reversal of 1128902978 is 8792098211.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 39833 + ... + 62003.

It is an arithmetic number, because the mean of its divisors is an integer number (120992604).

Almost surely, 2^1128902978 is an apocalyptic number.

1128902978 is a deficient number, since it is larger than the sum of its proper divisors (806978686).

1128902978 is a wasteful number, since it uses less digits than its factorization.

1128902978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25817.

The product of its (nonzero) digits is 145152, while the sum is 47.

The square root of 1128902978 is about 33599.1514476184. The cubic root of 1128902978 is about 1041.2432672129.

The spelling of 1128902978 in words is "one billion, one hundred twenty-eight million, nine hundred two thousand, nine hundred seventy-eight".