1011049998 has 16 divisors (see below), whose sum is σ = 2310971520. Its totient is φ = 288871416.

The previous prime is 1011049969. The next prime is 1011050023. The reversal of 1011049998 is 8999401101.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (42), and also a Moran number because the ratio is a prime number: 24072619 = 1011049998 / (1 + 0 + 1 + 1 + 0 + 4 + 9 + 9 + 9 + 8).

It is a Curzon number.

It is a congruent number.

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, 12036268 + ... + 12036351.

It is an arithmetic number, because the mean of its divisors is an integer number (144435720).

Almost surely, 2^1011049998 is an apocalyptic number.

1011049998 is an abundant number, since it is smaller than the sum of its proper divisors (1299921522).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1011049998 is a wasteful number, since it uses less digits than its factorization.

1011049998 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24072631.

The product of its (nonzero) digits is 23328, while the sum is 42.

The square root of 1011049998 is about 31797.0124068284. The cubic root of 1011049998 is about 1003.6698484044.

The spelling of 1011049998 in words is "one billion, eleven million, forty-nine thousand, nine hundred ninety-eight".