1067998356 has 36 divisors (see below), whose sum is σ = 2702303604. Its totient is φ = 355651200.

The previous prime is 1067998339. The next prime is 1067998357. The reversal of 1067998356 is 6538997601.

It can be written as a sum of positive squares in 2 ways, for example, as 470195856 + 597802500 = 21684^2 + 24450^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×1067998356² = 2281240976837405472, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1067998357) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 24216 + ... + 52176.

It is an arithmetic number, because the mean of its divisors is an integer number (75063989).

Almost surely, 2^1067998356 is an apocalyptic number.

It is an amenable number.

1067998356 is an abundant number, since it is smaller than the sum of its proper divisors (1634305248).

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

1067998356 is a wasteful number, since it uses less digits than its factorization.

1067998356 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29032 (or 29027 counting only the distinct ones).

The product of its (nonzero) digits is 2449440, while the sum is 54.

The square root of 1067998356 is about 32680.2441239352. The cubic root of 1067998356 is about 1022.1709355719.

The spelling of 1067998356 in words is "one billion, sixty-seven million, nine hundred ninety-eight thousand, three hundred fifty-six".