1290381167 has 4 divisors (see below), whose sum is σ = 1346484720. Its totient is φ = 1234277616.

The previous prime is 1290381137. The next prime is 1290381199. The reversal of 1290381167 is 7611830921.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7611830921 = 1549 ⋅4914029.

It is a cyclic number.

It is not a de Polignac number, because 1290381167 - 2¹⁸ = 1290119023 is a prime.

It is a super-2 number, since 2×1290381167² = 3330167112296563778, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1290381167.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1290381137) 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 3 ways as a sum of consecutive naturals, for example, 28051742 + ... + 28051787.

It is an arithmetic number, because the mean of its divisors is an integer number (336621180).

Almost surely, 2^1290381167 is an apocalyptic number.

1290381167 is a deficient number, since it is larger than the sum of its proper divisors (56103553).

1290381167 is an equidigital number, since it uses as much as digits as its factorization.

1290381167 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56103552.

The product of its (nonzero) digits is 18144, while the sum is 38.

The square root of 1290381167 is about 35921.8758836451. The cubic root of 1290381167 is about 1088.6944408609.

The spelling of 1290381167 in words is "one billion, two hundred ninety million, three hundred eighty-one thousand, one hundred sixty-seven".