1836742656 has 144 divisors (see below), whose sum is σ = 5697193320. Its totient is φ = 524697600.

The previous prime is 1836742651. The next prime is 1836742667. The reversal of 1836742656 is 6562476381.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1836742651) 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, 298006 + ... + 304106.

Almost surely, 2^1836742656 is an apocalyptic number.

1836742656 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1836742656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2848596660).

1836742656 is an abundant number, since it is smaller than the sum of its proper divisors (3860450664).

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

1836742656 is an equidigital number, since it uses as much as digits as its factorization.

1836742656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6140 (or 6113 counting only the distinct ones).

The product of its digits is 1451520, while the sum is 48.

The square root of 1836742656 is about 42857.2357484708. The cubic root of 1836742656 is about 1224.6616099342.

The spelling of 1836742656 in words is "one billion, eight hundred thirty-six million, seven hundred forty-two thousand, six hundred fifty-six".