1011219494 has 4 divisors (see below), whose sum is σ = 1516829244. Its totient is φ = 505609746.

The previous prime is 1011219479. The next prime is 1011219497. The reversal of 1011219494 is 4949121101.

It is a semiprime because it is the product of two primes.

It is a self number, because there is not a number n which added to its sum of digits gives 1011219494.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1011219497) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 252804872 + ... + 252804875.

It is an arithmetic number, because the mean of its divisors is an integer number (379207311).

Almost surely, 2^1011219494 is an apocalyptic number.

1011219494 is a deficient number, since it is larger than the sum of its proper divisors (505609750).

1011219494 is an equidigital number, since it uses as much as digits as its factorization.

1011219494 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 505609749.

The product of its (nonzero) digits is 2592, while the sum is 32.

The square root of 1011219494 is about 31799.6775769818. The cubic root of 1011219494 is about 1003.7259315258.

The spelling of 1011219494 in words is "one billion, eleven million, two hundred nineteen thousand, four hundred ninety-four".