1128977438 has 8 divisors (see below), whose sum is σ = 1709907888. Its totient is φ = 559008144.

The previous prime is 1128977389. The next prime is 1128977467. The reversal of 1128977438 is 8347798211.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

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, 2740031 + ... + 2740442.

It is an arithmetic number, because the mean of its divisors is an integer number (213738486).

Almost surely, 2^1128977438 is an apocalyptic number.

1128977438 is a deficient number, since it is larger than the sum of its proper divisors (580930450).

1128977438 is a wasteful number, since it uses less digits than its factorization.

1128977438 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5480578.

The product of its digits is 677376, while the sum is 50.

The square root of 1128977438 is about 33600.2594930456. The cubic root of 1128977438 is about 1041.2661594280.

The spelling of 1128977438 in words is "one billion, one hundred twenty-eight million, nine hundred seventy-seven thousand, four hundred thirty-eight".