1351690381 has 8 divisors (see below), whose sum is σ = 1484694720. Its totient is φ = 1224872352.

The previous prime is 1351690369. The next prime is 1351690391. The reversal of 1351690381 is 1830961531.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1351690381 - 2¹¹ = 1351688333 is a prime.

It is a super-2 number, since 2×1351690381² = 3654133772175850322, 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 1351690381.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1351690391) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1546120 + ... + 1546993.

It is an arithmetic number, because the mean of its divisors is an integer number (185586840).

Almost surely, 2^1351690381 is an apocalyptic number.

It is an amenable number.

1351690381 is a deficient number, since it is larger than the sum of its proper divisors (133004339).

1351690381 is a wasteful number, since it uses less digits than its factorization.

1351690381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3093155.

The product of its (nonzero) digits is 19440, while the sum is 37.

The square root of 1351690381 is about 36765.3421172713. The cubic root of 1351690381 is about 1105.6705473305.

The spelling of 1351690381 in words is "one billion, three hundred fifty-one million, six hundred ninety thousand, three hundred eighty-one".