1111642100 has 18 divisors (see below), whose sum is σ = 2412263574. Its totient is φ = 444656800.

The previous prime is 1111642099. The next prime is 1111642117. The reversal of 1111642100 is 12461111.

It can be written as a sum of positive squares in 3 ways, for example, as 125933284 + 985708816 = 11222^2 + 31396^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5558111 + ... + 5558310.

It is an arithmetic number, because the mean of its divisors is an integer number (134014643).

Almost surely, 2^1111642100 is an apocalyptic number.

1111642100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1111642100 is an abundant number, since it is smaller than the sum of its proper divisors (1300621474).

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

1111642100 is a wasteful number, since it uses less digits than its factorization.

1111642100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11116435 (or 11116428 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 17.

The square root of 1111642100 is about 33341.2972153154. The cubic root of 1111642100 is about 1035.9091329694.

The spelling of 1111642100 in words is "one billion, one hundred eleven million, six hundred forty-two thousand, one hundred".