1900681390 has 16 divisors (see below), whose sum is σ = 3422334960. Its totient is φ = 760026240.

The previous prime is 1900681381. The next prime is 1900681411. The reversal of 1900681390 is 931860091.

It is a super-2 number, since 2×1900681390² = 7225179492584664200, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3430 + ... + 61750.

It is an arithmetic number, because the mean of its divisors is an integer number (213895935).

Almost surely, 2^1900681390 is an apocalyptic number.

1900681390 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1900681390 is a deficient number, since it is larger than the sum of its proper divisors (1521653570).

1900681390 is a wasteful number, since it uses less digits than its factorization.

1900681390 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61587.

The product of its (nonzero) digits is 11664, while the sum is 37.

The square root of 1900681390 is about 43596.8048141145. The cubic root of 1900681390 is about 1238.7103722826.

The spelling of 1900681390 in words is "one billion, nine hundred million, six hundred eighty-one thousand, three hundred ninety".