1406637137 has 8 divisors (see below), whose sum is σ = 1489724136. Its totient is φ = 1323588352.

The previous prime is 1406637131. The next prime is 1406637163. The reversal of 1406637137 is 7317366041.

It can be written as a sum of positive squares in 4 ways, for example, as 7203856 + 1399433281 = 2684^2 + 37409^2 .

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 1406637137 - 2¹⁸ = 1406374993 is a prime.

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 1406637137.

It is not an unprimeable number, because it can be changed into a prime (1406637131) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 106883 + ... + 119319.

It is an arithmetic number, because the mean of its divisors is an integer number (186215517).

Almost surely, 2^1406637137 is an apocalyptic number.

1406637137 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

1406637137 is a deficient number, since it is larger than the sum of its proper divisors (83086999).

1406637137 is a wasteful number, since it uses less digits than its factorization.

1406637137 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19107.

The product of its (nonzero) digits is 63504, while the sum is 38.

The square root of 1406637137 is about 37505.1614714562. The cubic root of 1406637137 is about 1120.4539871375.

The spelling of 1406637137 in words is "one billion, four hundred six million, six hundred thirty-seven thousand, one hundred thirty-seven".