901691838 has 48 divisors (see below), whose sum is σ = 2095919280. Its totient is φ = 290195136.

The previous prime is 901691837. The next prime is 901691881. The reversal of 901691838 is 838196109.

It is a junction number, because it is equal to n+sod(n) for n = 901691793 and 901691802.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (901691837) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 17895 + ... + 46082.

It is an arithmetic number, because the mean of its divisors is an integer number (43664985).

Almost surely, 2^901691838 is an apocalyptic number.

901691838 is an abundant number, since it is smaller than the sum of its proper divisors (1194227442).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

901691838 is a wasteful number, since it uses less digits than its factorization.

901691838 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64023 (or 64011 counting only the distinct ones).

The product of its (nonzero) digits is 93312, while the sum is 45.

The square root of 901691838 is about 30028.1840609784. The cubic root of 901691838 is about 966.0939880002.

The spelling of 901691838 in words is "nine hundred one million, six hundred ninety-one thousand, eight hundred thirty-eight".