1924398997 has 8 divisors (see below), whose sum is σ = 2103328512. Its totient is φ = 1752772800.

The previous prime is 1924398979. The next prime is 1924399007. The reversal of 1924398997 is 7998934291.

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

It is a cyclic number.

It is not a de Polignac number, because 1924398997 - 2¹¹ = 1924396949 is a prime.

It is a super-2 number, since 2×1924398997² = 7406622999309212018, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1924398967) 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, 1825279 + ... + 1826332.

It is an arithmetic number, because the mean of its divisors is an integer number (262916064).

Almost surely, 2^1924398997 is an apocalyptic number.

1924398997 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

1924398997 is a deficient number, since it is larger than the sum of its proper divisors (178929515).

1924398997 is a wasteful number, since it uses less digits than its factorization.

1924398997 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3651659.

The product of its digits is 8817984, while the sum is 61.

The square root of 1924398997 is about 43867.9723374582. The cubic root of 1924398997 is about 1243.8414941000.

The spelling of 1924398997 in words is "one billion, nine hundred twenty-four million, three hundred ninety-eight thousand, nine hundred ninety-seven".