1940797154 has 8 divisors (see below), whose sum is σ = 2919835308. Its totient is φ = 967518720.

The previous prime is 1940797151. The next prime is 1940797169. The reversal of 1940797154 is 4517970491.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 1907330929 + 33466225 = 43673^2 + 5785^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 1940797099 and 1940797108.

It is not an unprimeable number, because it can be changed into a prime (1940797151) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1439087 + ... + 1440434.

Almost surely, 2^1940797154 is an apocalyptic number.

1940797154 is a deficient number, since it is larger than the sum of its proper divisors (979038154).

1940797154 is a wasteful number, since it uses less digits than its factorization.

1940797154 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2879860.

The product of its (nonzero) digits is 317520, while the sum is 47.

The square root of 1940797154 is about 44054.4793863235. The cubic root of 1940797154 is about 1247.3645067655.

The spelling of 1940797154 in words is "one billion, nine hundred forty million, seven hundred ninety-seven thousand, one hundred fifty-four".