1671020523 has 10 divisors (see below), whose sum is σ = 2496215964. Its totient is φ = 1114013628.

The previous prime is 1671020521. The next prime is 1671020539. The reversal of 1671020523 is 3250201761.

It is a happy number.

It is not a de Polignac number, because 1671020523 - 2¹ = 1671020521 is a prime.

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

It is not an unprimeable number, because it can be changed into a prime (1671020521) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 10314861 + ... + 10315022.

Almost surely, 2^1671020523 is an apocalyptic number.

1671020523 is a deficient number, since it is larger than the sum of its proper divisors (825195441).

1671020523 is an equidigital number, since it uses as much as digits as its factorization.

1671020523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20629895 (or 20629886 counting only the distinct ones).

The product of its (nonzero) digits is 2520, while the sum is 27.

The square root of 1671020523 is about 40878.1178994337. The cubic root of 1671020523 is about 1186.6626172992.

The spelling of 1671020523 in words is "one billion, six hundred seventy-one million, twenty thousand, five hundred twenty-three".