1011997419 has 8 divisors (see below), whose sum is σ = 1350964800. Its totient is φ = 673847496.

The previous prime is 1011997379. The next prime is 1011997439. The reversal of 1011997419 is 9147991101.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1011997419 - 2⁷ = 1011997291 is a prime.

It is a super-2 number, since 2×1011997419² = 2048277552125323122, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1011997439) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 201469 + ... + 206430.

It is an arithmetic number, because the mean of its divisors is an integer number (168870600).

Almost surely, 2^1011997419 is an apocalyptic number.

1011997419 is a deficient number, since it is larger than the sum of its proper divisors (338967381).

1011997419 is an equidigital number, since it uses as much as digits as its factorization.

1011997419 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 408729.

The product of its (nonzero) digits is 20412, while the sum is 42.

The square root of 1011997419 is about 31811.9068746279. The cubic root of 1011997419 is about 1003.9832523013.

The spelling of 1011997419 in words is "one billion, eleven million, nine hundred ninety-seven thousand, four hundred nineteen".