1020403197 has 16 divisors (see below), whose sum is σ = 1649136960. Its totient is φ = 618426000.

The previous prime is 1020403183. The next prime is 1020403207. The reversal of 1020403197 is 7913040201.

It is not a de Polignac number, because 1020403197 - 2⁸ = 1020402941 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a self number, because there is not a number n which added to its sum of digits gives 1020403197.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1020403127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1717554 + ... + 1718147.

It is an arithmetic number, because the mean of its divisors is an integer number (103071060).

Almost surely, 2^1020403197 is an apocalyptic number.

It is an amenable number.

1020403197 is a deficient number, since it is larger than the sum of its proper divisors (628733763).

1020403197 is a wasteful number, since it uses less digits than its factorization.

1020403197 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3435721 (or 3435715 counting only the distinct ones).

The product of its (nonzero) digits is 1512, while the sum is 27.

The square root of 1020403197 is about 31943.7505155547. The cubic root of 1020403197 is about 1006.7553284457.

Adding to 1020403197 its reverse (7913040201), we get a palindrome (8933443398).

The spelling of 1020403197 in words is "one billion, twenty million, four hundred three thousand, one hundred ninety-seven".