1023617990 has 32 divisors (see below), whose sum is σ = 1925816256. Its totient is φ = 390994560.

The previous prime is 1023617971. The next prime is 1023617993. The reversal of 1023617990 is 997163201.

It is a happy number.

1023617990 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1023617993) 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, 148664 + ... + 155396.

It is an arithmetic number, because the mean of its divisors is an integer number (60181758).

Almost surely, 2^1023617990 is an apocalyptic number.

1023617990 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1023617990 is a deficient number, since it is larger than the sum of its proper divisors (902198266).

1023617990 is a wasteful number, since it uses less digits than its factorization.

1023617990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7424.

The product of its (nonzero) digits is 20412, while the sum is 38.

The square root of 1023617990 is about 31994.0305369611. The cubic root of 1023617990 is about 1007.8114851493.

The spelling of 1023617990 in words is "one billion, twenty-three million, six hundred seventeen thousand, nine hundred ninety".