1798797136 has 40 divisors (see below), whose sum is σ = 3553344000. Its totient is φ = 881961600.

The previous prime is 1798797131. The next prime is 1798797137. The reversal of 1798797136 is 6317978971.

It is a super-2 number, since 2×1798797136² = 6471342272963604992, which contains 22 as substring.

It is a Smith number, since the sum of its digits (58) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1798797131) 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, 183561 + ... + 193111.

It is an arithmetic number, because the mean of its divisors is an integer number (88833600).

Almost surely, 2^1798797136 is an apocalyptic number.

1798797136 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1798797136 is a deficient number, since it is larger than the sum of its proper divisors (1754546864).

1798797136 is a wasteful number, since it uses less digits than its factorization.

1798797136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9787 (or 9781 counting only the distinct ones).

The product of its digits is 4000752, while the sum is 58.

The square root of 1798797136 is about 42412.2286139269. The cubic root of 1798797136 is about 1216.1693734814.

The spelling of 1798797136 in words is "one billion, seven hundred ninety-eight million, seven hundred ninety-seven thousand, one hundred thirty-six".