1900450154 has 16 divisors (see below), whose sum is σ = 2873428992. Its totient is φ = 942670608.

The previous prime is 1900450103. The next prime is 1900450171. The reversal of 1900450154 is 4510540091.

It is a super-2 number, since 2×1900450154² = 7223421575677247432, which contains 22 as substring.

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, 123407 + ... + 137949.

It is an arithmetic number, because the mean of its divisors is an integer number (179589312).

Almost surely, 2^1900450154 is an apocalyptic number.

1900450154 is a deficient number, since it is larger than the sum of its proper divisors (972978838).

1900450154 is a wasteful number, since it uses less digits than its factorization.

1900450154 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15061.

The product of its (nonzero) digits is 3600, while the sum is 29.

The square root of 1900450154 is about 43594.1527501109. The cubic root of 1900450154 is about 1238.6601366058.

The spelling of 1900450154 in words is "one billion, nine hundred million, four hundred fifty thousand, one hundred fifty-four".