1088621646 has 16 divisors (see below), whose sum is σ = 2488278144. Its totient is φ = 311034744.

The previous prime is 1088621623. The next prime is 1088621647. The reversal of 1088621646 is 6461268801.

It is a Harshad number since it is a multiple of its sum of digits (42), and also a Moran number because the ratio is a prime number: 25919563 = 1088621646 / (1 + 0 + 8 + 8 + 6 + 2 + 1 + 6 + 4 + 6).

It is a junction number, because it is equal to n+sod(n) for n = 1088621598 and 1088621607.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1088621647) 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, 12959740 + ... + 12959823.

It is an arithmetic number, because the mean of its divisors is an integer number (155517384).

Almost surely, 2^1088621646 is an apocalyptic number.

1088621646 is an abundant number, since it is smaller than the sum of its proper divisors (1399656498).

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

1088621646 is a wasteful number, since it uses less digits than its factorization.

1088621646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25919575.

The product of its (nonzero) digits is 110592, while the sum is 42.

The square root of 1088621646 is about 32994.2668656238. The cubic root of 1088621646 is about 1028.7084846191.

The spelling of 1088621646 in words is "one billion, eighty-eight million, six hundred twenty-one thousand, six hundred forty-six".