1958076871969 has 9 divisors (see below), whose sum is σ = 1972461033777. Its totient is φ = 1943796882804.

The previous prime is 1958076871957. The next prime is 1958076871979. The reversal of 1958076871969 is 9691786708591.

The square root of 1958076871969 is 1399313.

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

It is not a de Polignac number, because 1958076871969 - 2⁵ = 1958076871937 is a prime.

It is a super-2 number, since 2×1958076871969² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1958076871895 and 1958076871904.

It is not an unprimeable number, because it can be changed into a prime (1958076871909) 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, 194499474 + ... + 194509540.

Almost surely, 2^{1958076871969} is an apocalyptic number.

1958076871969 is the 1399313-rd square number.

1958076871969 is the 699657-th centered octagonal number.

It is an amenable number.

1958076871969 is a deficient number, since it is larger than the sum of its proper divisors (14384161808).

1958076871969 is an frugal number, since it uses more digits than its factorization.

1958076871969 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20412 (or 10206 counting only the distinct ones).

The product of its (nonzero) digits is 411505920, while the sum is 76.

The spelling of 1958076871969 in words is "one trillion, nine hundred fifty-eight billion, seventy-six million, eight hundred seventy-one thousand, nine hundred sixty-nine".