1945650697 has 8 divisors (see below), whose sum is σ = 2065543200. Its totient is φ = 1826362944.

The previous prime is 1945650691. The next prime is 1945650727. The reversal of 1945650697 is 7960565491.

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 1945650697 - 2³ = 1945650689 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1945650691) 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, 144547 + ... + 157432.

It is an arithmetic number, because the mean of its divisors is an integer number (258192900).

Almost surely, 2^1945650697 is an apocalyptic number.

1945650697 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

1945650697 is a deficient number, since it is larger than the sum of its proper divisors (119892503).

1945650697 is a wasteful number, since it uses less digits than its factorization.

1945650697 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 302375.

The product of its (nonzero) digits is 2041200, while the sum is 52.

The square root of 1945650697 is about 44109.5306821553. The cubic root of 1945650697 is about 1248.4034437012.

The spelling of 1945650697 in words is "one billion, nine hundred forty-five million, six hundred fifty thousand, six hundred ninety-seven".