1128902977 has 4 divisors (see below), whose sum is σ = 1129071316. Its totient is φ = 1128734640.

The previous prime is 1128902963. The next prime is 1128903019. The reversal of 1128902977 is 7792098211.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7792098211 = 449 ⋅17354339.

It can be written as a sum of positive squares in 2 ways, for example, as 239909121 + 888993856 = 15489^2 + 29816^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1128902977 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1128902927) 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, 73674 + ... + 87667.

It is an arithmetic number, because the mean of its divisors is an integer number (282267829).

Almost surely, 2^1128902977 is an apocalyptic number.

It is an amenable number.

1128902977 is a deficient number, since it is larger than the sum of its proper divisors (168339).

1128902977 is an equidigital number, since it uses as much as digits as its factorization.

1128902977 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 168338.

The product of its (nonzero) digits is 127008, while the sum is 46.

The square root of 1128902977 is about 33599.1514327371. The cubic root of 1128902977 is about 1041.2432669055.

The spelling of 1128902977 in words is "one billion, one hundred twenty-eight million, nine hundred two thousand, nine hundred seventy-seven".