1902298421 has 8 divisors (see below), whose sum is σ = 1985656704. Its totient is φ = 1818994320.

The previous prime is 1902298399. The next prime is 1902298423. The reversal of 1902298421 is 1248922091.

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 1902298421 - 2²⁶ = 1835189557 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1902298423) 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, 68975 + ... + 92531.

It is an arithmetic number, because the mean of its divisors is an integer number (248207088).

Almost surely, 2^1902298421 is an apocalyptic number.

It is an amenable number.

1902298421 is a deficient number, since it is larger than the sum of its proper divisors (83358283).

1902298421 is a wasteful number, since it uses less digits than its factorization.

1902298421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27091.

The product of its (nonzero) digits is 20736, while the sum is 38.

The square root of 1902298421 is about 43615.3461639364. The cubic root of 1902298421 is about 1239.0615560414.

The spelling of 1902298421 in words is "one billion, nine hundred two million, two hundred ninety-eight thousand, four hundred twenty-one".