1128950019 has 24 divisors (see below), whose sum is σ = 1688590800. Its totient is φ = 725968320.

The previous prime is 1128949973. The next prime is 1128950027. The reversal of 1128950019 is 9100598211.

It is not a de Polignac number, because 1128950019 - 2¹⁹ = 1128425731 is a prime.

It is a super-2 number, since 2×1128950019² = 2549056290800200722, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1128950089) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 444784 + ... + 447314.

It is an arithmetic number, because the mean of its divisors is an integer number (70357950).

Almost surely, 2^1128950019 is an apocalyptic number.

1128950019 is a deficient number, since it is larger than the sum of its proper divisors (559640781).

1128950019 is a wasteful number, since it uses less digits than its factorization.

1128950019 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4275 (or 4272 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 36.

The square root of 1128950019 is about 33599.8514728860. The cubic root of 1128950019 is about 1041.2577297620.

The spelling of 1128950019 in words is "one billion, one hundred twenty-eight million, nine hundred fifty thousand, nineteen".