1126621990 has 16 divisors (see below), whose sum is σ = 2183913648. Its totient is φ = 415983456.

The previous prime is 1126621981. The next prime is 1126621999. The reversal of 1126621990 is 991266211.

It is an interprime number because it is at equal distance from previous prime (1126621981) and next prime (1126621999).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1126621999) 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, 4333032 + ... + 4333291.

It is an arithmetic number, because the mean of its divisors is an integer number (136494603).

Almost surely, 2^1126621990 is an apocalyptic number.

1126621990 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1126621990 is a deficient number, since it is larger than the sum of its proper divisors (1057291658).

1126621990 is a wasteful number, since it uses less digits than its factorization.

1126621990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8666343.

The product of its (nonzero) digits is 11664, while the sum is 37.

The square root of 1126621990 is about 33565.1901528950. The cubic root of 1126621990 is about 1040.5415048605.

The spelling of 1126621990 in words is "one billion, one hundred twenty-six million, six hundred twenty-one thousand, nine hundred ninety".