1020091730 has 16 divisors (see below), whose sum is σ = 2098474560. Its totient is φ = 349745712.

The previous prime is 1020091717. The next prime is 1020091757. The reversal of 1020091730 is 371900201.

It is a super-2 number, since 2×1020091730² = 2081174275228785800, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1020091696 and 1020091705.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7286300 + ... + 7286439.

It is an arithmetic number, because the mean of its divisors is an integer number (131154660).

Almost surely, 2^1020091730 is an apocalyptic number.

1020091730 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1020091730 is an abundant number, since it is smaller than the sum of its proper divisors (1078382830).

1020091730 is a wasteful number, since it uses less digits than its factorization.

1020091730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14572753.

The product of its (nonzero) digits is 378, while the sum is 23.

The square root of 1020091730 is about 31938.8749019122. The cubic root of 1020091730 is about 1006.6528843095.

Adding to 1020091730 its reverse (371900201), we get a palindrome (1391991931).

The spelling of 1020091730 in words is "one billion, twenty million, ninety-one thousand, seven hundred thirty".