1631045 has 16 divisors (see below), whose sum is σ = 2201472. Its totient is φ = 1151040.

The previous prime is 1631029. The next prime is 1631051. The reversal of 1631045 is 5401361.

It is not a de Polignac number, because 1631045 - 2⁴ = 1631029 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 950 + ... + 2040.

It is an arithmetic number, because the mean of its divisors is an integer number (137592).

2^1631045 is an apocalyptic number.

It is an amenable number.

1631045 is a deficient number, since it is larger than the sum of its proper divisors (570427).

1631045 is a wasteful number, since it uses less digits than its factorization.

1631045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1132.

The product of its (nonzero) digits is 360, while the sum is 20.

The square root of 1631045 is about 1277.1237214929. The cubic root of 1631045 is about 117.7123367387.

The spelling of 1631045 in words is "one million, six hundred thirty-one thousand, forty-five".