1979151 has 8 divisors (see below), whose sum is σ = 2646960. Its totient is φ = 1315392.

The previous prime is 1979149. The next prime is 1979171. The reversal of 1979151 is 1519791.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1979151 - 2¹ = 1979149 is a prime.

1979151 is a lucky number.

It is a zygodrome in base 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1979101) 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, 421 + ... + 2033.

It is an arithmetic number, because the mean of its divisors is an integer number (330870).

2^1979151 is an apocalyptic number.

1979151 is a deficient number, since it is larger than the sum of its proper divisors (667809).

1979151 is a wasteful number, since it uses less digits than its factorization.

1979151 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2025.

The product of its digits is 2835, while the sum is 33.

The square root of 1979151 is about 1406.8230165874. The cubic root of 1979151 is about 125.5527732638.

The spelling of 1979151 in words is "one million, nine hundred seventy-nine thousand, one hundred fifty-one".