1951345 has 16 divisors (see below), whose sum is σ = 2706048. Its totient is φ = 1335040.

The previous prime is 1951321. The next prime is 1951403. The reversal of 1951345 is 5431591.

It is not a de Polignac number, because 1951345 - 2⁹ = 1950833 is a prime.

It is a Duffinian number.

1951345 is a lucky number.

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, 109 + ... + 1978.

It is an arithmetic number, because the mean of its divisors is an integer number (169128).

2^1951345 is an apocalyptic number.

It is an amenable number.

1951345 is a deficient number, since it is larger than the sum of its proper divisors (754703).

1951345 is a wasteful number, since it uses less digits than its factorization.

1951345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2120.

The product of its digits is 2700, while the sum is 28.

The square root of 1951345 is about 1396.9055086154. The cubic root of 1951345 is about 124.9620151250.

It can be divided in two parts, 195 and 1345, that added together give a triangular number (1540 = T₅₅).

The spelling of 1951345 in words is "one million, nine hundred fifty-one thousand, three hundred forty-five".