1829020922569 has 9 divisors (see below), whose sum is σ = 1833311336437. Its totient is φ = 1824740535424.

The previous prime is 1829020922567. The next prime is 1829020922591. The reversal of 1829020922569 is 9652290209281.

The square root of 1829020922569 is 1352413.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 409081764025 + 1419939158544 = 639595^2 + 1191612^2 .

It is not a de Polignac number, because 1829020922569 - 2¹ = 1829020922567 is a prime.

It is a super-2 number, since 2×1829020922569² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1829020922567) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 688376889 + ... + 688379545.

Almost surely, 2^{1829020922569} is an apocalyptic number.

1829020922569 is the 1352413-rd square number.

1829020922569 is the 676207-th centered octagonal number.

It is an amenable number.

1829020922569 is a deficient number, since it is larger than the sum of its proper divisors (4290413868).

1829020922569 is an frugal number, since it uses more digits than its factorization.

1829020922569 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6332 (or 3166 counting only the distinct ones).

The product of its (nonzero) digits is 2799360, while the sum is 55.

The spelling of 1829020922569 in words is "one trillion, eight hundred twenty-nine billion, twenty million, nine hundred twenty-two thousand, five hundred sixty-nine".