1090213787 has 16 divisors (see below), whose sum is σ = 1264623360. Its totient is φ = 931204512.

The previous prime is 1090213781. The next prime is 1090213793. The reversal of 1090213787 is 7873120901.

It is an interprime number because it is at equal distance from previous prime (1090213781) and next prime (1090213793).

It is a cyclic number.

It is not a de Polignac number, because 1090213787 - 2²⁴ = 1073436571 is a prime.

It is a super-2 number, since 2×1090213787² = 2377132202729762738, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1090213787.

It is not an unprimeable number, because it can be changed into a prime (1090213781) 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, 40703 + ... + 61944.

It is an arithmetic number, because the mean of its divisors is an integer number (79038960).

Almost surely, 2^1090213787 is an apocalyptic number.

1090213787 is a deficient number, since it is larger than the sum of its proper divisors (174409573).

1090213787 is a wasteful number, since it uses less digits than its factorization.

1090213787 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102722.

The product of its (nonzero) digits is 21168, while the sum is 38.

The square root of 1090213787 is about 33018.3855904555. The cubic root of 1090213787 is about 1029.2097457451.

The spelling of 1090213787 in words is "one billion, ninety million, two hundred thirteen thousand, seven hundred eighty-seven".