1071493668 has 72 divisors (see below), whose sum is σ = 3099794880. Its totient is φ = 305709120.

The previous prime is 1071493637. The next prime is 1071493679. The reversal of 1071493668 is 8663941701.

It is a happy number.

It is a super-2 number, since 2×1071493668² = 2296197361128188448, which contains 22 as substring.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 204303 + ... + 209481.

Almost surely, 2^1071493668 is an apocalyptic number.

1071493668 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

1071493668 is an abundant number, since it is smaller than the sum of its proper divisors (2028301212).

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

1071493668 is a wasteful number, since it uses less digits than its factorization.

1071493668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6017 (or 6012 counting only the distinct ones).

The product of its (nonzero) digits is 217728, while the sum is 45.

The square root of 1071493668 is about 32733.6778868492. The cubic root of 1071493668 is about 1023.2848310917.

The spelling of 1071493668 in words is "one billion, seventy-one million, four hundred ninety-three thousand, six hundred sixty-eight".