1089836493 has 16 divisors (see below), whose sum is σ = 1540445760. Its totient is φ = 682995456.

The previous prime is 1089836477. The next prime is 1089836497. The reversal of 1089836493 is 3946389801.

It is not a de Polignac number, because 1089836493 - 2⁴ = 1089836477 is a prime.

It is a super-3 number, since 3×1089836493³ (a number of 28 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1089836497) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 31371 + ... + 56247.

It is an arithmetic number, because the mean of its divisors is an integer number (96277860).

Almost surely, 2^1089836493 is an apocalyptic number.

It is an amenable number.

1089836493 is a deficient number, since it is larger than the sum of its proper divisors (450609267).

1089836493 is a wasteful number, since it uses less digits than its factorization.

1089836493 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25756.

The product of its (nonzero) digits is 1119744, while the sum is 51.

The square root of 1089836493 is about 33012.6717034535. The cubic root of 1089836493 is about 1029.0910046718.

The spelling of 1089836493 in words is "one billion, eighty-nine million, eight hundred thirty-six thousand, four hundred ninety-three".