1444726137 has 16 divisors (see below), whose sum is σ = 1976240448. Its totient is φ = 938499840.

The previous prime is 1444726121. The next prime is 1444726187. The reversal of 1444726137 is 7316274441.

It is not a de Polignac number, because 1444726137 - 2⁴ = 1444726121 is a prime.

It is a super-2 number, since 2×1444726137² = 4174467221861885538, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1444726095 and 1444726104.

It is not an unprimeable number, because it can be changed into a prime (1444726187) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21564 + ... + 57917.

It is an arithmetic number, because the mean of its divisors is an integer number (123515028).

Almost surely, 2^1444726137 is an apocalyptic number.

It is an amenable number.

1444726137 is a deficient number, since it is larger than the sum of its proper divisors (531514311).

1444726137 is an equidigital number, since it uses as much as digits as its factorization.

1444726137 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79640.

The product of its digits is 112896, while the sum is 39.

The square root of 1444726137 is about 38009.5532333649. The cubic root of 1444726137 is about 1130.4772925631.

The spelling of 1444726137 in words is "one billion, four hundred forty-four million, seven hundred twenty-six thousand, one hundred thirty-seven".