1019494100 has 18 divisors (see below), whose sum is σ = 2212302414. Its totient is φ = 407797600.

The previous prime is 1019494093. The next prime is 1019494111. The reversal of 1019494100 is 14949101.

It can be written as a sum of positive squares in 3 ways, for example, as 101888836 + 917605264 = 10094^2 + 30292^2 .

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, 5097371 + ... + 5097570.

Almost surely, 2^1019494100 is an apocalyptic number.

1019494100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1019494100 is an abundant number, since it is smaller than the sum of its proper divisors (1192808314).

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

1019494100 is a wasteful number, since it uses less digits than its factorization.

1019494100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10194955 (or 10194948 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 29.

The square root of 1019494100 is about 31929.5176913150. The cubic root of 1019494100 is about 1006.4562603298.

The spelling of 1019494100 in words is "one billion, nineteen million, four hundred ninety-four thousand, one hundred".