1955890497 has 8 divisors (see below), whose sum is σ = 2844931680. Its totient is φ = 1185388160.

The previous prime is 1955890487. The next prime is 1955890543. The reversal of 1955890497 is 7940985591.

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

It is not a de Polignac number, because 1955890497 - 2⁴ = 1955890481 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1955890487) 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, 29634672 + ... + 29634737.

It is an arithmetic number, because the mean of its divisors is an integer number (355616460).

Almost surely, 2^1955890497 is an apocalyptic number.

It is an amenable number.

1955890497 is a deficient number, since it is larger than the sum of its proper divisors (889041183).

1955890497 is a wasteful number, since it uses less digits than its factorization.

1955890497 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59269423.

The product of its (nonzero) digits is 4082400, while the sum is 57.

The square root of 1955890497 is about 44225.4507834573. The cubic root of 1955890497 is about 1250.5896944579.

The spelling of 1955890497 in words is "one billion, nine hundred fifty-five million, eight hundred ninety thousand, four hundred ninety-seven".