1381126037 has 4 divisors (see below), whose sum is σ = 1381745676. Its totient is φ = 1380506400.

The previous prime is 1381126027. The next prime is 1381126039. The reversal of 1381126037 is 7306211831.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 630311236 + 750814801 = 25106^2 + 27401^2 .

It is a cyclic number.

It is not a de Polignac number, because 1381126037 - 2¹⁰ = 1381125013 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1381125994 and 1381126012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1381126039) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 306464 + ... + 310937.

It is an arithmetic number, because the mean of its divisors is an integer number (345436419).

Almost surely, 2^1381126037 is an apocalyptic number.

It is an amenable number.

1381126037 is a deficient number, since it is larger than the sum of its proper divisors (619639).

1381126037 is an equidigital number, since it uses as much as digits as its factorization.

1381126037 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 619638.

The product of its (nonzero) digits is 6048, while the sum is 32.

The square root of 1381126037 is about 37163.5041001249. The cubic root of 1381126037 is about 1113.6390151004.

Adding to 1381126037 its reverse (7306211831), we get a palindrome (8687337868).

The spelling of 1381126037 in words is "one billion, three hundred eighty-one million, one hundred twenty-six thousand, thirty-seven".