1972137 has 16 divisors (see below), whose sum is σ = 2742080. Its totient is φ = 1259712.

The previous prime is 1972133. The next prime is 1972147. The reversal of 1972137 is 7312791.

It is not a de Polignac number, because 1972137 - 2² = 1972133 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1972133) 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, 12018 + ... + 12180.

It is an arithmetic number, because the mean of its divisors is an integer number (171380).

2^1972137 is an apocalyptic number.

It is an amenable number.

1972137 is a deficient number, since it is larger than the sum of its proper divisors (769943).

1972137 is a wasteful number, since it uses less digits than its factorization.

1972137 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 312.

The product of its digits is 2646, while the sum is 30.

The square root of 1972137 is about 1404.3279531505. The cubic root of 1972137 is about 125.4042803827.

The spelling of 1972137 in words is "one million, nine hundred seventy-two thousand, one hundred thirty-seven".